Legal Interpretivism

The Problem of What Makes Law True

A parliament enacts a statute, a court resolves an appeal, and an administrative body adopts a regulation. These are observable events. A different kind of proposition says that a citizen now owes a legal duty, possesses a claim against another person, or may obtain a remedy. Legal interpretivism asks what connects the events to the propositions. The question is constitutive: in virtue of what do legal rights and obligations exist? The fact that officials have acted supplies part of an answer, because legal positions change with legislative and judicial histories. Yet identification of the events leaves open the question of what those events accomplished in law.

Consider a statute instructing public authorities to provide reasonable access to a service. Its adoption, text, legislative history, judicial interpretation, and administrative application are all facts relevant to a lawyer. If disagreement arises over what access must be provided, one may ask what the words conventionally communicated, what the legislators expected, what established precedent permits, or what equal treatment requires. An answer to the legal question must also explain why some of these considerations matter more than others. A theory of interpretation organizes the inquiry; a theory of law identifies why the organized inquiry tracks legal reality.

The distinctive interpretivist proposal is that moral or political principles enter the constitutive explanation of how institutions change legal positions. This is stronger than the proposition that judges ought to act morally, and more specific than the observation that law and morality influence one another. The aim is to explain a law's institutional determination in light of the justification for treating institutional history as authoritative. Nicos Stavropoulos formulates the problem as a question about the grounds of law, showing why the interpretivist answer must account for the exact normative relevance of official acts (Stavropoulos, 2021).

This monograph begins with the object of the theory before moving to its major historical formulations. The important unit of inquiry is not a single technique employed by a court but the relation among past governmental conduct, principles of political morality, and presently existing legal rights. Distinguishing these levels will prevent a recurrent error: taking the presence of evaluative language in judicial opinions as conclusive evidence for an interpretivist metaphysics. Evaluative language is evidence of a practice; its explanation remains contested.

Definition and Scope of Legal Interpretivism

Legal interpretivism holds that legal content depends on the normatively justified significance of institutional practice, such that identifying at least some legal rights and obligations requires substantive moral interpretation of that practice. For the strongest version, principles of political morality explain why institutional facts have their legally constitutive role in the first place. The word interpretation here designates a method of grasping an object's justified practical significance, rather than merely resolving linguistic ambiguity. A judicial practice can carry a significance beyond what a particular official predicted, intended, or consciously endorsed.

Several distinctions determine the scope of the thesis. Legal content concerns which norms, rights, duties, liberties, powers, and liabilities obtain in a jurisdiction. Legal validity concerns whether a standard counts as legally valid under the applicable criteria. Legal obligation can describe a legal normative position and, in a different inquiry, a morally binding duty that one ought to fulfill. Adjudication concerns what courts should decide and on what grounds. Statutory interpretation concerns what contribution enacted words make to legal content. These issues interact, but an answer to any one does not automatically settle the rest.

Interpretivism also differs from the maxim that statutory words should be interpreted generously. A strict textual interpretation may be supported by an interpretivist theory when fair notice, democratic authorization, or limits on public coercion make the enacted language decisive. Conversely, a judge can invoke moral values while holding a positivist theory of law, if the judge is exercising discretion granted by valid social sources. The theoretical fault line concerns what ultimately explains the binding contribution of sources, rather than which argumentative vocabulary appears in a judgment.

The theory is centrally associated with Ronald Dworkin, especially his essays from 1967 onward and the comprehensive framework of Law's Empire (1986). Yet the interpretivist family includes different accounts of the role of morality and institutional action. Hybrid accounts treat socially established legal standards as inputs later supplemented or filtered by moral principles. Pure accounts explain the legal relevance of institutional action through moral principles from the outset. Their disagreement determines whether interpretivism amounts to a revision of source-based jurisprudence or to a more thorough reorganization of jurisprudential explanation.

The subject is therefore a philosophical theory about the grounds of law with direct consequences for legal epistemology and political legitimacy. The Nature of Law, Legal Positivism, Natural Law, Legal Validity, Legal Formalism, and Judicial Reasoning remain neighboring research subjects. They enter this investigation where their claims bear on interpretivism's explanatory adequacy. The central issue is always the interpretivist explanation of legally relevant institutional history.

Historical Antecedents: Equity, Natural Law, and Institutional Reason

The recognition that legal reasoning exceeds mechanical repetition of enacted language is older than modern interpretivism. Aristotle's treatment of equity in the Nicomachean Ethics (V.10, 1137a31–1138a3) explains why a general rule may require correction in circumstances for which its lawgiver could not have formulated exact words. This is a precursor to a problem of applied legal judgment: how should an institution treat general language when its ordinary range generates an anomalous result? It is not an early statement of Dworkin's theory of the metaphysical grounds of legal rights.

Roman juristic techniques, medieval discussions of natural justice, and early modern disputes over sovereignty and interpretation likewise show recurrent efforts to integrate institutional commands with rational standards. Their concepts are historically distinct. Natural-law approaches ask about reason, practical goodness, and the moral status of enacted law. Interpretivism explains how a historically particular institutional practice creates determinate rights and obligations. The shared concern with morality does not erase this difference in explanatory objects.

The modern problem took a distinctive form when law came to be described through social conventions, authorized acts, and rules of recognition. Legal positivism clarified why the existence of a law could be ascertained independently of an observer's approval of its merits. It also forced a sharper inquiry into the relationship between the social pedigree of a rule and the moral principles invoked in sophisticated legal systems. The Hart–Fuller exchange of 1958 crystallized questions about fidelity, rule-guidance, and the inner requirements of legality. Hart argued for conceptual separation between law's existence and its moral worth; Fuller emphasized the practical morality involved in law's enterprise of ordering human conduct (Hart, 1958; Fuller, 1958).

These exchanges furnish historical conditions for interpretivism without constituting the theory itself. The question whether a bad statute is law differs from the question whether the legally relevant meaning of an enacted statute is partly determined by principles that justify its authority. Similarly, the virtues of clarity and prospectivity can support either a positivist conception of legal order or an interpretivist account of the moral reasons for treating publicly announced language as legally controlling.

A responsible genealogy identifies continuity in the problem and discontinuity in its formulation. Dworkin's argument emerges from common-law reasoning, constitutional controversy, and the interpretation of institutional practice within political communities. Its originality lies in treating the dispute over principles and hard cases as evidence concerning the truth conditions of legal propositions. The historical foundations are thus a set of live conceptual pressures, not a retrospective claim that all traditions of equitable interpretation already embraced interpretivism.

Hart's Social Theory and the Rule of Recognition

H. L. A. Hart's The Concept of Law, first published in 1961, describes law through the union of primary rules governing conduct and secondary rules concerning recognition, change, and adjudication. The social existence of a legal system depends upon a complex pattern: ordinary members generally conform to the system's effective rules, while officials accept its ultimate criteria from an internal point of view. This approach improves on theories that reduce legal obligations to threats issued by a sovereign. A rule can guide conduct because participants treat it as a standard, criticize departures, and acknowledge reasons for conformity (Hart, 1961/2012, chapters V–VI).

The rule of recognition identifies authoritative criteria for identifying valid law. Its existence is grounded in official practice rather than in enactment by another, superior legal rule. One can therefore ask whether a statute was properly enacted, whether a judicial decision supplies binding precedent, and whether a constitution controls ordinary legislation. The criteria may be complex and contested at their margins. Hart's theory does not require every legal proposition to be recoverable from a single written code.

Interpretivists question whether this account reaches the ultimate grounds of legal content. If officials agree that a constitutional provision prohibits cruel punishment but disagree about what cruelty requires, is their disagreement simply over how the agreed criterion should be applied? Or may they genuinely disagree over which moral principles determine what the constitution presently requires? The interpretivist sees in certain persistent controversies a challenge to the idea that an accepted social rule alone specifies all legal grounds.

Hart's position is subtler than a mechanical pedigree test. His posthumously published Postscript, appended to the 1994 edition and included in the 2012 third edition, accepts that a system's criteria of validity may incorporate moral standards. This inclusive form of positivism is consistent with the ultimate social source of the criteria even when applying them requires moral reasoning. The distinction is decisive: the morality of a criterion's content differs from the grounds that make the criterion legally authoritative.

Hart thereby supplies both the main alternative and a corrective to simplified accounts of the debate. A theorist who shows that judges reason morally has not yet refuted a positivist who allows socially adopted moral tests. Dworkin must show something further: that the legal relevance of moral argument cannot always be explained through social incorporation alone, or that the deepest explanation of incorporation itself is moral. The source of that further argument will emerge from principles, disagreement, and the justification of institutional force.

Dworkin's Early Challenge: Rules, Principles, and Rights

Dworkin's 1967 article "The Model of Rules" challenged what he presented as a rule-centered picture of positivism. He argued that legal practice contains standards whose legal operation is unlike the operation of discrete rules. Rules typically apply in a more determinate conditional manner once their terms and hierarchy are settled. Principles supply reasons with weight that may compete with other principles. Their legal significance is revealed in reasoning that treats them as relevant grounds for decision even where no explicit enactment specifies their application (Dworkin, 1967, University of Chicago Law Review, 35, 14–46).

A legal principle such as the prohibition on benefiting from one's wrongdoing can support a judgment while coexisting with principles of testamentary freedom, legality, and institutional restraint. A decision therefore involves explaining why one standard prevails in the context rather than proving that the defeated standard never had legal relevance. Dworkin used this structure to challenge the claim that judges necessarily make new law whenever a valid rule fails to yield an obvious result.

The argument from principles is best reconstructed in stages. First, courts sometimes treat principles as legal reasons rather than as extraneous aspirations. Second, the relevance of some principles appears irreducible to a simple legislative or judicial pedigree. Third, a theory that counts legal standards exclusively through such pedigree risks misdescribing actual legal practice. The conclusion establishes a problem for a restricted source theory. It does not by itself establish that every legally relevant principle is an independent moral fact or that principles lack any social history. A positivist may treat judicial recognition, constitutional incorporation, or conventional interpretive methods as the relevant sources.

This distinction helps explain the historical development of the debate. Early Dworkin was attacking a particular model of legal rules and discretion. Later Dworkin developed a theory about legal truth in which principles contribute to the best interpretation of the whole practice. The passage from a critique of a narrow account of rule identification to a constitutive theory of law requires additional arguments concerning political morality, consistency, and the treatment of citizens. It cannot be inferred solely from the observation that judges sometimes balance principles.

Dworkin's rights thesis also belongs here. In hard cases, a judicial decision should ordinarily enforce rights understood as already existing within the legal order, instead of distributing collective benefits as though the judge were a legislature. The argument appeals to the structure of judicial justification and the unfairness of retroactively imposing duties through policy-making disguised as adjudication. Its force depends on whether rights can in fact be identified through a principled interpretation of institutional history. That dependence becomes the defining ambition of the mature theory.

The Judicial Test Case: Riggs v. Palmer

The New York Court of Appeals decision in Riggs v. Palmer, 115 N.Y. 506 (1889), provides a particularly useful primary example. Elmer Palmer, named as a beneficiary in his grandfather's will, murdered the testator in anticipation of inheritance. The legal question was whether he could take the property under the relevant testamentary and succession arrangements. The majority, written by Judge Earl, denied the benefit through an appeal to principles preventing a person from profiting through wrongdoing. Judge Gray dissented, arguing in part that the court was adding a consequence the legislature had not specified. The full majority and dissent are available in the reported opinion.

The dispute is philosophically significant because the judges did not disagree simply about whether murder is morally wrong. They disagreed about the legal consequences of applying the statutory framework to the wrongful beneficiary. The majority understood general principles as bearing on the operation of enacted rules; the dissent defended a stricter separation between judicial application and legislative choice. The case exposes several dimensions of legal interpretation at once: textual entitlement, institutional competence, background principles, judicial remedies, and the relation between law and public policy.

For an interpretivist, the majority exhibits a legal practice in which a principle constrains the significance of statutory provisions. The correct explanation of its legal status must say why that principle was legally applicable and how it could defeat an apparent entitlement. A positivist may answer that inherited common-law principles, recognized equitable doctrines, or accepted interpretive conventions authorized the result. The opinion therefore illustrates the question but does not uniquely prove the interpretivist answer.

The disagreement also supplies an important objection to simple moralism. If personal conviction that murder is wrong were sufficient to determine law, the judicial argument would be trivial. The legal difficulty is institutional: what may a court justifiably do in the face of valid statutory language and an egregious case? An adequate theory must explain the place of precedent, the limits of judicial power, fair warning, and the distribution of lawmaking authority. Dworkin's later account of integrity aims to make those constraints elements of an interpretive enterprise rather than external inconveniences.

The case retains value precisely because its competing opinions provide evidence of how legal reasons are publicly contested. A historical text is not a laboratory test for a jurisprudential theory. The more disciplined use of Riggs is to ask which explanatory framework best accounts for the disagreement and the institutional standards the judges considered relevant.

Hard Cases and the Limits of Judicial Discretion

Dworkin's "Hard Cases" (1975) developed the challenge to positivist adjudication by distinguishing arguments of principle from arguments of policy. Arguments of principle claim to establish or protect individual rights. Arguments of policy seek desirable collective conditions. Dworkin argued that judicial decisions in hard cases characteristically require justification in the former terms because courts adjudicate claims between parties under an existing legal order (Dworkin, 1975, Harvard Law Review, 88, 1057–1109).

The relevant form of discretion is crucial. An official may possess discretion in a weak sense because judgment is needed to apply an existing standard, or because no other official can reverse the decision. The strong sense is a power to decide without being bound by an applicable authoritative standard. Dworkin disputed the inference from difficult legal questions to strong judicial discretion. That an answer is disputed does not show that the law has left a normative vacuum for the judge to fill.

The interpretivist argument proceeds as follows. A claimant invokes a right said to follow from legal practice, even though no simple rule decides the dispute. The judge's duty is to determine which conception of existing institutional standards most coherently justifies the claim in principle. If a defensible interpretation establishes the right, the judge has reason to enforce it as an existing legal entitlement. Otherwise judicial reliance on policy risks assigning rights through a process lacking the authorization and prospective accountability of legislation. The same argument explains why precedent and legal history must constrain the court even when moral judgment is indispensable.

The objection is substantial. Social practice may settle some questions and leave others genuinely open; legal institutions can authorize courts to develop law prospectively or retrospectively within specified boundaries. A positivist can accept that judges ought to use principled argument in such circumstances while describing the decision as legally creative. The interpretivist must therefore show why the principle offered in a hard case belongs to the law itself rather than merely justifying a desirable extension of it.

A further complication concerns institutional diversity. A constitutional court adjudicating fundamental rights, a criminal court bound by legality, and a commercial court applying a detailed code operate under different constraints. The most plausible interpretivist theory gives significant weight to those differences. Treating all hard cases as invitations to a single moral balancing procedure would abandon the institutional features that made the theory necessary.

From Legal Technique to a Theory of Legal Truth

Dworkin's essay "Law as Interpretation" (1982) and Law's Empire (1986) transform the issue. The question becomes how statements of law acquire truth conditions through constructive interpretation. For example, the proposition that a person has a legal right to a remedy purports to describe a presently existing entitlement. Its truth must depend on something that the legal system makes the case, even when the relevant authorities disagree. An interpretivist maintains that the truth-making relationship involves the justification of institutional history, not simply the linguistic contents of official statements (Dworkin, 1982; Dworkin, 1986).

This transformation changes the explanatory direction. Earlier disputes often asked whether a judge who invokes a principle has gone beyond established law. The mature question asks what made that principle legally significant, and what grounds the whole legal scheme in which particular enactments and precedents receive their force. The interpreter constructs an account of practice that respects what institutions have done while assigning those actions justified normative consequences.

Constructive interpretation has a comparative structure. Different accounts may fit the historical material to different degrees and justify it with different principles. Their merits cannot be evaluated by asking whether the judge's preferred outcome is attractive in isolation. Each interpretation must explain why institutional decisions that sometimes conflict, exhibit compromise, and result from distinct political constituencies nevertheless have the effects attributed to them. The history is part of the evidence, the institutional commitment part of the object, and the moral argument part of the theory's grounding claim.

The shift also makes the method philosophically controversial. Why should legal facts be explained through constructive interpretation when other social facts are explained through conventions, intentions, or causal and constitutive relations? Dworkin's answer invokes the special character of law as an institution exercising coercive authority in the name of a political community. Because government must justify treating citizens through its power, the legally relevant significance of governmental conduct is tied to principles that justify its use.

This is the transition from a method of good judging to a theory of law. It is coherent only if the standards guiding justified coercion can genuinely determine legal propositions. A theory of law cannot avoid the truth question by recommending that judges decide wisely. It must say why the recommended decision answers what law already requires.

Constructive Interpretation: Fit and Justification

Fit requires that an interpretation explain enough of a practice's actual institutional materials to count as an interpretation of that practice. Relevant materials include constitutional texts, enacted provisions, judicial holdings, accepted procedural arrangements, and patterns of official action. Justification requires that the interpretation present those materials as an intelligible exercise of political principle. Dworkin's mature account treats both as dimensions of judging a candidate interpretation, while giving the historical record its constraining force (Dworkin, 1986, chapters 2–7).

The relationship is more complex than a numerical tradeoff. An interpretation that explains almost none of the enacted legal history cannot become legally superior merely because its political morality is attractive. Conversely, a narrative that reproduces institutional decisions with maximal documentary fidelity may fail to explain which legal claims follow from them. A threshold of fit preserves the distinct identity of the community's law; justification helps determine how a sufficiently fitted set of decisions should be understood in terms of principle.

Suppose a line of precedents protects reliance on publicly announced governmental representations but contains inconsistent reasons for doing so. A fit-based inquiry identifies which judgments were actually issued, their holdings, and how later courts treated them. A justificatory inquiry asks whether fairness, legitimate expectations, equality, or institutional integrity best explains the cases. The interpretation's practical consequences depend on both inquiries. It may support an entitlement in a new case whose facts differ from earlier cases in ways that the selected principle treats as irrelevant.

The conceptual challenge is to specify how fit limits moral reasoning. Too little constraint turns interpretation into the judge's political preference. Too much constraint makes the justificatory dimension redundant. The interpretation cannot simply select the morally best possible legal system because the legal system's actual history matters. The difficulty is especially acute when prior decisions conflict, constitutional texts are open-ended, or the political community has made compromises not reducible to one unified moral ideal.

A further issue concerns the unit of interpretation. Should the interpreter seek coherence across a whole jurisdiction, a doctrinal field, a constitutional tradition, or an individual enactment? Dworkin's theory aspires to broad principled coherence, but actual legal systems distribute power across institutions and may contain deliberate pluralism. A productive interpretation needs an account of which materials form the relevant practice and why their boundaries are legally meaningful.

The Chain Novel and Historical Continuity

Dworkin's chain-novel analogy imagines authors successively writing chapters of a novel that none controls completely. Each new author must advance the story by interpreting what earlier contributors have written and by making the developing work the best coherent novel possible under those constraints. The analogy illuminates the obligation of a judge to continue an institution's history through an interpretation that both respects and develops it (Dworkin, 1982; 1986).

The analogy brings the temporal structure of legal authority into focus. A judgment enters a sequence of acts; it inherits an institutional setting and contributes new material for later interpretation. Its author cannot freely declare an unrelated legal regime while pretending to continue the inherited one. Yet preserving history cannot require literal repetition of every previous claim. A practice changes by responding to new cases, new legislation, and more exact understandings of principles.

The analogy is illuminating insofar as law is a cumulative practice. It is limited because legal institutions are unlike literary coauthors in several respects. Legislatures and courts possess different powers. Statutes can override precedents. Constitutional amendments can displace previously accepted interpretations. Different legal actors can issue simultaneously binding pronouncements. Some legal orders deliberately tolerate inconsistency through jurisdictional boundaries and procedural priorities. These features mean that literary coherence cannot supply the whole account of institutional authority.

Stanley Fish's response to Dworkin in "Working on the Chain Gang" (1982) pressed interpretive questions about constraints, authority, and the role of interpretive communities. The dialogue is valuable because it shows that the metaphor's force depends on contested assumptions concerning what constrains interpretation. An interpreter inhabits professional norms and publicly taught methods, not a neutral standpoint outside all practices (Fish, 1982).

The philosophical lesson is that history constrains legal judgment through institutionally specific relations. A theory of continuity must explain what makes a prior enactment or judgment authoritative, how subsequent action changes its force, and how a later court can develop without usurping legislative authority. The chain novel illustrates the need for such an explanation. It is not itself a substitute for it.

Law as Integrity and the Community of Principle

Integrity is Dworkin's claim that government should speak, as far as its institutional history permits, through a coherent scheme of principles rather than applying arbitrary distinctions among persons. This requirement is connected to the idea that political power must treat citizens with equal concern and respect. A legal community is more than a collection of enacted commands: it bears responsibilities arising from the way it has claimed and exercised authority in the name of all its members (Dworkin, 1986).

The central argument begins with a political premise. Coercive government needs a justification for imposing burdens and enforcing claims. Equal treatment gives a reason for consistency across cases that are alike in relevant respects. An institution's own history matters because it establishes the terms upon which citizens have been governed, relied, and held accountable. Therefore the principles that best justify the institution's historical pattern help explain what legal rights its members now have. Integrity is the name for the requirement that the community's exercise of power be organized by that justificatory continuity.

This reasoning offers more than conventionalism. Conventionalism looks to determinate decisions previously accepted as law and is tempted to understand uncovered cases as occasions for fresh discretionary policy. Integrity treats legal rights as potentially extending beyond the explicit formulations of past decisions through principles that provide the best account of the practice. It also differs from an unconstrained pragmatism that would decide cases only by expected future benefits. Existing political commitments matter to what the community can presently claim the right to do.

Coherence, however, is not synonymous with uniformity. A state can maintain different institutional principles for criminal law, administrative procedure, taxation, and private law because the political purposes, constitutional competencies, and standards of notice vary. A plausible theory of integrity must specify which kinds of difference are justified and which amount to inconsistent treatment. It cannot condemn every doctrinal distinction merely because a single moral axiom would simplify the system.

The most demanding question concerns the relation between integrity and justice. Actual law can be deeply unjust, and a more perfectly consistent scheme can be consistently oppressive. Dworkin's account does not license substituting an ideal constitution for the real one. Its justification must show why integrity within an imperfect institutional history is a genuine virtue and how far that virtue remains authoritative when the history itself embodies moral wrongs. That issue governs interpretivism's limits.

Institutional History, Coercion, and Equal Concern

Legal interpretation is conducted against the background of coercive power. Courts issue orders that may be enforced, impose liabilities, transfer property, and constrain liberty. An interpretivist account therefore asks why the state's past conduct provides a legitimate basis for treating someone in a particular way today. Institutional history matters because the government has used public acts to determine expectations and distribute rights. But why those historical facts should have any legally determinative force is a normative problem.

The principle of fair notice explains some of that force. When government threatens sanctions, citizens have a moral reason to receive accessible information about prohibited conduct. A theory grounded in notice may prioritize enacted language, clear precedent, and nonretroactivity. Equality explains another part: similarly situated citizens should not be exposed to radically different decisions because judges have different personal preferences. Institutional competence explains yet another: elected representatives and courts are differently authorized to make collective decisions.

These principles can support outcomes commonly described as formal or textual. A criminal prohibition may have a narrower legal operation than a general moral ideal of preventing harm would suggest. A statute may control despite a judge's belief that another policy would be fairer. Interpretivism can explain these constraints as morally significant features of governance. Its moral premise therefore does not amount to a permission to replace public law with individual conscience.

The difficult case arises when the relevant principles conflict. A broad interpretation might better protect vulnerable claimants but weaken fair notice. A strict rule might honor legislative language but reproduce an inequality inconsistent with the surrounding legal scheme. A theory that says only "choose the morally best result" hides rather than resolves this conflict. It must identify how the constitutional and institutional setting distributes authority among the principles and why that distribution helps determine legal content.

Pure interpretivism makes this concern fundamental. The reasons why enactments should alter rights are not an afterthought appended to a socially settled law. They explain the legal significance of enactment itself. As Stavropoulos emphasizes, the institutional and historical character of law is part of the moral explanation rather than a constraint later imposed upon morality (Stavropoulos, 2021, sections 4–5). That thesis is the strongest formulation of the interpretivist project and sets its highest burden of explanation.

Grounds of Law and the Structure of Constitutive Explanation

The grounds of law are those facts in virtue of which legal propositions hold. An enactment can be a cause of political behavior and a ground of a newly existing legal duty, but these explanations differ. The first concerns a sequence of events; the second concerns what constitutes the duty at a particular time. If a court recognizes a claim, the adjudication may cause compliance, while the entitlement it recognizes may already have existed. Confusing causal explanation with constitutive explanation makes it difficult to identify the distinctive thesis of legal interpretivism.

A useful analytical reconstruction separates four questions. Which institutional facts occurred? Which background arrangements make them recognizable as legislative, adjudicative, or administrative actions? Which standards assign them legal significance? What rights and obligations obtain because of their occurrence under those standards? A social-sources theory proposes a social explanation of the relevant standards. Interpretivism argues that moral considerations play a necessary part in explaining why the facts receive the legal significance they do. This is the difference between treating morality as possible evidence in the practice and treating it as a constituent of legal content.

The word "grounding" is used in contemporary metaphysics for an explanatory relation of dependence. The philosophical payoff is precision: legal content supervenes in significant ways upon institutional practice, but the relevant explanation must still say which aspects of the practice matter. A transcript of every official meeting would not, by itself, yield the jurisdiction's rights and duties. An explanatory bridge is necessary. Positivists and interpretivists disagree about the kind of bridge and its foundations (Stavropoulos, 2021; Greenberg, 2014).

A fully articulated interpretivism accordingly needs more than a functional argument that good legal systems should be fair. It must explain why moral facts are truth-making conditions for propositions concerning the law of an existing jurisdiction. A legislature can adopt a badly designed tax schedule, and citizens may still possess legal positions under it. If an interpretivist says the legal effect is the best morally justified effect of that schedule, the theory must clarify the role of legislative power, defects in moral justification, and the possibility of a legally operative but morally objectionable measure.

The grounds inquiry also resists an easy collapse into judicial psychology. Judges can be mistaken about legal consequences, just as legislators may misunderstand the consequences of enactment. Interpretivism, when conceived as a theory of grounds, concerns what the institutional history actually makes law, rather than the private ethical beliefs of officials. This objectivity claim raises a severe epistemic problem: how can participants reliably determine the moral principles that constitute the law when their assessments differ?

Hybrid Interpretivism and the Limits of Supplementation

Hybrid interpretivism combines socially established rules with moral principles used to correct or supplement those rules. In its simplest form, authorities first create norms through recognized procedures; subsequently, justice or fairness filters unacceptable results or fills gaps. This resembles much judicial reasoning and can appear to accommodate the Dworkinian insight while preserving a largely positivist account of sources. The position is philosophically unstable unless it identifies the principle that determines when correction is legally authorized.

The first difficulty concerns priority. If socially generated norms have legal force independently of the moral test, the explanation is initially positivist. Moral principles then contribute as additional standards: their authority must be grounded somewhere. If it is grounded in an accepted source, inclusive positivism may explain the phenomenon. If it is independent of all source-based authorization, the theory must explain why and how morality makes the corrected standard legally binding. Saying that the judge must be fair does not answer the question.

The second difficulty concerns the reach of a correction. A moral principle may override a manifestly unjust consequence, extend a right to an unforeseen case, or supply a new obligation. Why does it have these different effects, and what distinguishes a properly legal correction from an exercise of legislative power? An account that permits unlimited correction loses the role of existing institutional decisions. An account that tightly limits correction by existing convention risks losing its distinctive moral grounding thesis.

The third difficulty concerns the set of principles that count. The law is often subject to multiple reasonable moral interpretations. A hybrid theory that adds whichever principles judges happen to endorse becomes sensitive to institutional psychology rather than to objectively ascertainable legal grounds. It needs criteria specifying which moral propositions are legally relevant, how conflicting propositions are compared, and how their significance depends on the history being interpreted.

Stavropoulos's distinction between hybrid and pure versions clarifies the philosophical stakes. The pure version does not begin with an independently complete corpus of socially grounded law and then adjust it. It explains the legally constitutive role of practices through the morality of their institutional function. The distinction was also a central focus of Oxford's 2024 "Interpretivism and Its Critics" research project. Pure interpretivism therefore offers a deeper answer to the grounds question, though at the cost of assuming a heavier explanatory burden.

Pure Interpretivism: The Moral Relevance of Sources

Pure interpretivism starts from the claim that the reason institutional history matters to law is itself a question of political morality. Its explanatory order runs from reasons for treating political decisions as authoritative, through the particular role those reasons assign to the decisions, to the rights and duties those decisions constitute. The result is a theory in which institutional history remains necessary while moral principles explain its legally determinative force.

Consider a legislature acting under fair democratic procedures. Its enactment may give citizens reasons to coordinate, rely upon a public scheme, and refrain from undermining a common arrangement. The enacted words matter because the public announcement is what individuals can reasonably know and use to guide their lives. Even where legislators have imperfect moral motives, the institution's performance can change everyone's normative situation. A pure interpretivist seeks to explain legal duties as the historically grounded effects of such reason-generating actions.

This picture does not imply that every moral reason becomes law. A person may have a moral duty to help a stranger that no legal institution has recognized or made enforceable. The specific legal character of an obligation depends upon its relation to institutional practice. Interpretation identifies the effect that practice justifiably has on the political community's rights and duties. The object therefore remains the law of a particular community, with its own enactments, institutions, courts, and constitutional arrangements.

The main argument for pure interpretivism invokes the necessity of explaining relevance. A social event cannot announce its own normative role merely by occurring. Why should a majority vote create a duty, while an equally numerous gathering of private citizens ordinarily does not? A social theory answers by appealing to the system's recognized procedures and official practices. The pure interpretivist presses a further question: why should those practices determine the legal significance of state power? The proposed answer refers to principles such as democratic authorization, equality, fair notice, and legitimate settlement of disagreement.

There is a risk of regress. If moral principles explain the significance of institutional facts, what explains the legal relevance of those moral principles? The pure interpretivist answers that the principles are not additional enacted legal norms requiring further recognition; they are explanatory features of the kind of political practice law is. A critic can reasonably ask whether this response adequately distinguishes constitutional law, criminal law, private conventions, and ordinary morality. The theory must show that its moral foundation is neither circular nor a disguised redefinition of legal fact.

Theoretical Disagreement and the Semantic Sting

Dworkin's argument from theoretical disagreement is one of the most ambitious challenges to positivism. Lawyers and judges may agree on the institutional sources yet disagree about what makes a proposition of law true. They can dispute not merely the application of a shared rule but the grounds upon which legal obligations exist. In Law's Empire, the phenomenon supports the claim that legal concepts are interpretive: participants engage in substantive controversies about their proper use rather than merely consulting an accepted set of factual tests (Dworkin, 1986, chapter 1).

The argument can be reconstructed without assuming its conclusion. First, competent legal participants sometimes disagree over fundamental criteria for the content of law. Second, their disagreement is treated as a disagreement about existing law, not simply a disagreement over how to reform it. Third, a theory reducing all legal truth to criteria fixed by shared linguistic conventions may have difficulty explaining the dispute as genuine. An interpretive concept can explain why participants contest the theory that best justifies their practice while still addressing the same legal question.

The strongest positivist response is that legal disagreement does not require universal agreement on every standard of legal truth. Participants can share an institutional system while contesting the application of its criteria, their relative weight, or the lawmaking consequences of unresolved questions. They may also misunderstand the system or attempt to change it through argument. A theory of law need not derive one determinate legal answer from every disagreement among officials.

The linguistic objection to Dworkin is particularly important. David Plunkett and Tim Sundell explain how speakers can engage in genuine, consequential metalinguistic negotiations, disputing which concepts or expressions should be used even when they do not share identical literal meanings. Their work challenges the inference from genuine disagreement to a common interpretive concept with the metaphysical structure Dworkin proposes (Plunkett & Sundell, 2013). What appears to be a disagreement over settled legal grounds may sometimes be a negotiation over the standards by which a legal community should govern itself.

The proper conclusion is discriminating. Theoretical disagreement gives powerful evidence that legal practice contains controversies about grounds and institutional authority. It does not by itself prove that moral facts constitute legal content. To make that further claim, interpretivism needs a theory of institutional normativity explaining why the best substantive interpretation, rather than an official convention or legal innovation, identifies existing law. The semantic argument opens the question; the grounding argument must answer it.

The Positivist Response: Incorporation and Legal Validity

Inclusive legal positivism admits that a society's ultimate social criteria can make moral standards relevant to legal validity. A constitution might prohibit cruel punishment, demand equality, or require proportionality. Courts applying those provisions may need to reason about the meaning of cruelty, equality, or proportionality. The positivist maintains that the moral standard is legally relevant because accepted legal sources refer to it, not because political morality independently fixes every source's legal force.

This response preserves a methodological difference between ultimate grounds and incorporated criteria. Moral reasoning can be necessary for identifying the legal result without being necessary for explaining why the system permits such reasoning. An official rule of recognition may specify that certain acts are valid only if they satisfy a constitutional principle. The legal system's adoption of that criterion is a social fact, even if resolving an individual claim under it demands independent moral judgment.

Hart's Postscript and Jules Coleman's The Practice of Principle are central to the development of this response. Coleman defends inclusive positivism while emphasizing a pragmatic and analytical approach to jurisprudence (Coleman, 2001; Hart, 2012). The approach can explain much that Dworkin identifies in constitutional and common-law practice without treating political morality as an ultimate ground in every case.

The interpretivist reply targets the source of incorporation itself. If officials recognize a moral principle as legally significant because it offers the best justification of their institutional obligations, then social acceptance may be evidence of that principle's role rather than its ultimate explanation. Conversely, when the practice includes stable and explicit incorporation language, a social-source explanation may be perfectly adequate. The debate requires an account of the difference between evidence of an ultimate criterion and the fact that constitutes it.

Thomas Adams's recent article "Criteria of Validity" argues that the familiar dispute over inclusive and exclusive positivism obscures the more fundamental form of validity criteria. He proposes distinguishing the formal conditions that constitute a legal act from substantive standards that regulate its legal treatment (Adams, 2025). Whether or not this proposal succeeds, it sharpens an important objection to interpretivism: a legal institution may produce law through a formally valid act even when courts subsequently invalidate or disapply its effects under other norms.

The key test is explanatory economy without loss of practice. If the inclusive positivist can account for moralized constitutional argument, disputed legal principles, and duties to interpret faithfully, the interpretivist must identify an additional phenomenon that requires moral grounding at the constitutive level. The interpretivist cannot rely on the bare fact that officials value justice.

Exclusive Positivism, Authority, and the Sources Thesis

Joseph Raz's sources thesis presents a more stringent alternative. A legal system, he argues, claims authority; its directives are meant to help subjects act by identifying standards without first resolving all the reasons that authority purports to settle. If determining the content of an authoritative directive necessarily required the addressee to recreate the contested moral argument, the law's service as an authority would be compromised. Accordingly, Raz defends a source-based conception of the existence and content of law (Raz, 1979, especially "Legal Positivism and the Sources of Law").

The argument from authority is not the claim that law is morally good or always morally binding. Its focus is on how law can function as a publicly identifiable institution claiming to settle practical controversies. A legislative decision can sometimes supply an answer precisely because citizens can determine its content without redoing the legislative debate. This offers a powerful reason to distinguish the factual existence of the decision from the moral question whether it should be followed.

Interpretivism responds that authority itself has a normative structure. Understanding what a directive authoritatively changes may require asking why the institution possesses power, what forms of action fall within that power, and how legal interpretation can respect fair notice and equal concern. In this view, values can support the finality of sources rather than dissolve it. A morally grounded interpretation might conclude that the enacted text settles a question even when the interpreter would prefer a different solution.

The objection remains that such a reply may shift the issue. Raz asks whether a particular standard can be identified as law on the basis of sources; an interpretivist may answer why sources ought to matter. Those questions are related but conceptually different. A satisfactory theory must connect them by explaining why the normative case for respecting sources determines the actual existence or content of legal obligations. Otherwise an argument about legitimate authority has been substituted for an account of legal grounds.

The practical stakes appear in emergency regulations, criminal prohibitions, tax obligations, and administrative permits. Public guidance and predictability can be crucial to the possibility of lawful conduct. A theory whose legal answers systematically depend on deeply contested moral premises must explain how institutions can nonetheless guide conduct. The promise of interpretivism is to account for source authority within political morality; its danger is that the political morality becomes so demanding that source authority loses its independent function.

Legal Epistemology: Objectivity, Reasonableness, and Right Answers

Legal interpretivism is often associated with Dworkin's defense of right answers in hard cases. The proposition is epistemic and metaphysical: a legal question may have a correct answer even when judges are divided and available methods do not yield certainty. Dworkin's hypothetical judge Hercules represents an idealized interpreter who can construct the interpretation of the jurisdiction's legal practice most defensible under considerations of fit and justification. The image is a device for illuminating the demands of the theory, not a description of actual judicial capacity.

The claim of determinacy requires careful treatment. An objective answer can exist without being knowable by every interpreter. However, the absence of convergence does not itself establish that an answer exists. A theory must explain what facts would make one candidate uniquely correct and how comparative judgments of fit and justification can be warranted. In some circumstances, interpretations may be comparable; in others they may be tied, underdetermined, or sensitive to unresolved moral disagreement.

Objectivity does not require the interpreter to stand outside all evaluative commitments. Ethical and political propositions can be argued for through reasons and criticism. Yet an idealized structure of reasoning cannot guarantee a unique outcome. If two interpretations fit the legal history and rest on conflicting but defensible principles, the theory needs a way to judge their relative standing or to accommodate indeterminacy. A monograph on interpretivism should not equate moral realism with universal legal determinacy.

A related concern is institutional legitimacy. A judge who claims a uniquely correct answer may still be wrong and may have limited democratic authority to decide the matter. Epistemic humility is therefore an institutional requirement: public reasoning should make the grounds of interpretation reviewable, identify competing principles, and explain why the adopted interpretation accords with the judge's legal role. A moral theory of law offers no exemption from the requirements of legal procedure.

Andrei Marmor argues that interpretive theories confront serious problems concerning meaning, legal coherence, the authority of enacted law, and the possibility of distinguishing interpretation from legal innovation (Marmor, 2005). His criticism directs attention to a central fact: a normatively attractive account of legal truth must also be an administrable account of how participants can know and contest that truth.

Law, Morality, and the Status of Unjust Legal Orders

A society may enact rules requiring discrimination or authorizing coercive abuse. Such rules can be recognized by courts, enforced by officials, and used to organize conduct. Any general jurisprudential theory must explain what the legal system contains in these circumstances. The difficulty for interpretivism arises because the strongest formulations make moral facts constitutive of legal content. An observer may then ask whether an unjust institutional practice can generate law at all.

The response cannot consist of saying that legal institutions always improve morality. They do not. Political morality itself may recognize reasons connected to predictability, coordination, fair warning, administrative authority, and the rights of persons subject to governmental action even where substantive outcomes are bad. A legal provision can be morally defective while its existence and legal effects remain important to the judgments that officials and citizens must make.

A precise distinction is required between the moral value of a statute and the moral grounds for recognizing that a statute has a certain legal effect. It may be morally regrettable that an enactment exists, while there are valid reasons to interpret its legal operation by reference to notice, official responsibility, and procedural safeguards. A pure interpretivist can use this distinction to avoid the view that only morally commendable norms are law.

Nevertheless, deeply abusive systems remain a problem. If moral grounds confer legal relevance upon institutional history, what legal consequences follow from a regime that repeatedly violates basic equality and justice? Different interpretivists might assign different significance to the system's coercive institutions, the legitimate expectations they create, and the limits of permissible enforcement. A general theory must explain both the defects and the determinate institutional positions produced within that regime.

The discussion connects, but does not collapse into, the classical debate between natural law and positivism. Hart's insistence upon identifying wicked laws clearly serves moral criticism, while Fuller argues that law's internal requirements themselves have moral significance (Hart, 1958; Fuller, 1958). Interpretivism can preserve the critical aim only if legal classification remains capable of describing objectionable institutional realities. A philosophical explanation of legal content must make moral criticism possible without predetermining that the critic's preferred standards are already enforceable law.

Text, Meaning, and the Contribution of Enactment

Statutory language is an institutionally produced linguistic artifact. Its words carry ordinary and technical meanings, grammatical structures, pragmatic implications, and references whose significance depends on context. An enacted statute also has a legal status that differs from a private person's utterance of the same sentence. These features distinguish the linguistic question of what a text communicates from the legal question of what the statute contributes to rights and obligations.

A statute's contribution may often correspond closely to its ordinary meaning. This correspondence is valuable because a public announcement can guide conduct only if its addressees can understand it. But correspondence does not establish identity. A court must decide whether the text creates an exception, extends a preexisting right, authorizes a remedy, or modifies an established rule. Those legal effects depend on background legal institutions. Legal interpretation therefore cannot be reduced to dictionary substitution.

The central question is why a particular feature of the communication is legally important. Textualists may emphasize the publicly available meaning of enacted language; intentionalists may consider what the legislature intended to communicate; purposivists may stress the enactment's function. An interpretivist explains the selection among these features through principles such as democracy, fair notice, reliability, equality, and institutional competence. These reasons can yield different methods in different domains rather than one universal hierarchy.

Mark Greenberg's analysis of legal interpretation illustrates the issue through Smith v. United States, 508 U.S. 223 (1993), a dispute over the meaning and effect of using a firearm in connection with drug trafficking. The case allows comparison between extracting linguistic meaning and explaining the enacted law's effect on the normative situation (Greenberg, 2014). The choice of interpretive factors is part of a theory of how enacted acts matter, not an autonomous exercise in linguistic semantics.

The philosophical implication is significant. Interpretive methodologies are partly downstream from theories of law. Debates over original public meaning, legislative purpose, precedent, and moral principle are often disputes about the appropriate contribution of authoritative acts. A successful theory explains why evidence of meaning has legal importance and why sometimes the law's consequences differ from what an isolated sentence would suggest.

Legislative Intention, Democracy, and Public Meaning

Legislatures are collective bodies. Even when a bill has a definite text, its supporters may hold divergent intentions, expectations, and reasons for voting. A theory that identifies legal content with a single psychological intention must explain whose intention counts and why. The problem deepens when legislators consciously compromise by agreeing on language while leaving particular questions unresolved. In those circumstances, treating a judicially inferred unified intention as the statute's authoritative meaning may manufacture agreement that never existed.

Democratic authorization supplies a more promising foundation for recognizing legislative acts. Citizens have reasons to accept publicly constituted procedures for resolving disputes that cannot be settled through unanimous moral judgment. An enactment's authority can therefore arise from the legitimacy of a procedure and the publicly ascertainable output of its exercise. This supports a substantial, though not necessarily exclusive, role for enacted wording.

Dworkin's interpretive approach does not require judges to disregard legislative acts. It asks how those acts should count given the legitimate functions of representative decision-making. An interpreter may conclude that institutional integrity demands strict fidelity to text, or that a provision's legal role is clarified by the purpose it was publicly adopted to serve. The question remains which interpretation best justifies the particular democratic practice and its relation to the rest of law.

A difficulty follows from disagreement about democratic theory itself. Majoritarian authority, deliberative justification, constitutional limits, and protection of minority rights can pull interpretation in different directions. To make morality constitutive of law is to give these controversies jurisprudential importance. The interpretivist must identify workable constraints that prevent the theory from becoming dependent on the judge's complete personal philosophy of democracy.

An answer is to recognize levels of institutional settlement. Some questions have been assigned to legislatures and deliberately settled through enactment. Others remain entrusted to courts through broad constitutional language or established adjudicative powers. Interpretation must determine those allocations through the legal system's actual institutional history. This framework permits moral reasoning while protecting the distinct role of democratic decisions.

Precedent, Coherence, and Doctrinal Development

Judicial precedent is a particularly revealing test of interpretivism because a decided case contributes to law in ways that depend upon both institutional status and justification. The fact of a judgment can be established historically. Its legally operative rule, the reach of its holding, and the treatment owed to its reasons may remain disputed. The distinction between holding and dicta is itself part of the institutional practice by which courts construct continuity.

A Dworkinian judge seeks the principles that make the precedents intelligible while respecting their actual outcomes and the jurisdiction's doctrine of authority. This method is holistic in the sense that a decision gains significance within a wider arrangement of law. But it is not a license to ignore the hierarchy of courts, the possibility of overruling, or the effects of statutory changes. A theory of fit must make the structure of precedent an independent constraint upon interpretation.

There is no guarantee that a collection of precedents forms a consistent moral system. Courts decide under varying facts, political conditions, and legal methods. Some precedents may be wrong even by standards the same courts would otherwise endorse. A theory of integrity must say whether to preserve a mistaken decision out of respect for reliance and stability, narrow its application through doctrinal distinctions, or overrule it through an authorized procedure.

These options are not interchangeable. Preserving precedent can protect stable expectations while perpetuating an injustice. Overruling may correct a moral error while impairing confidence in law. Narrowing may reduce disruption but introduce complexity and arbitrary distinctions. The interpretivist can explain the competition through fairness and institutional responsibility, provided the analysis identifies who has the authority to adopt each course.

An important consequence is that legal interpretation is temporally indexed. A statement about the law at one time may be correct and become incorrect after authoritative institutional change. The need for such indexing becomes acute when legal databases present older decisions without procedural history. Interpretivism, properly understood, requires historical fidelity and accurate source identification before any moral synthesis can claim to determine current law.

Constitutional Interpretation and the Allocation of Judicial Power

Written constitutions frequently contain broad concepts such as equality, liberty, due process, and freedom of expression. Their application can require substantive normative reasoning. Dworkin's theory explains these provisions as components of a political practice whose best interpretation depends on principles of constitutional legitimacy. The provision's enacted wording and historical adoption matter, but the existence of a constitutional right may extend beyond the framers' concrete expectations.

The classic controversy with originalist approaches turns on what institutions have made authoritative. Some originalists distinguish the original public meaning of a text from its expected applications, allowing that an abstract constitutional concept can govern new circumstances. The interpretivist must therefore avoid portraying all originalists as committed to historical predictions. The dispute concerns which features of constitution-making should determine present legal content and the kind of moral argument that explains that determination.

The interpretivist strength is the capacity to explain principled continuity through social changes. A general commitment to equal protection can be applied to circumstances unanticipated at adoption. The burden is to show that the extension follows from the constitutional practice rather than from judges' independent preferences. An interpretation that takes a broad moral concept as binding must still justify its understanding of the relevant concept, the proper judicial role, and the relation to other constitutional provisions.

Institutional objections arise from separation of powers and democratic accountability. A constitutional court can invalidate decisions made by elected representatives, sometimes against the judgment of a large segment of the public. Dworkin's rights-based justification offers an argument for this power where the constitution protects individual entitlements. A critic may respond that the interpretation of moral rights is itself contested and that legislative deliberation deserves greater respect. The philosophical question thus includes who should decide, not only what decision would be best.

A comprehensive legal interpretivism needs a theory of institutional competence. Judges have duties of impartiality, evidence assessment, public justification, and decision under existing law, while legislatures have capacities for general policy, budgets, and political compromise. The law's interpretive grounds must respect these differentiated functions. Without them, integrity can become a moral ambition detached from the organizational reality of constitutional government.

Comparative Legal Traditions and Institutional Variation

Dworkin's most familiar examples arise from Anglo-American common-law and constitutional practices. Their reliance on precedent, reasoned judicial opinions, and open-ended legal principles makes them especially suitable for illustrating constructive interpretation. A general philosophical account of law, however, must address codified civil-law systems, mixed jurisdictions, administrative regimes, and transnational normative orders. The role of judicial precedent and the scope of interpretive discretion vary across these settings.

In civil-law traditions, statutory structure, codification, and systematic interpretation can play especially prominent roles. Judges also invoke principles, proportionality, coherence, and teleological reasoning. But those techniques operate within particular doctrines of judicial authority and institutional allocation. The fact that a civil-law court interprets a text purposively does not establish that the court adheres to the interpretivist theory of legal grounds. Equally, detailed codification does not by itself settle the metaphysical question in favor of source positivism.

Transnational and international legal regimes introduce further complications. Multiple institutions may make decisions under overlapping instruments without a single sovereign hierarchy. Treaties, customs, courts, and administrative bodies can have different relations to each other. Integrity might require coherence across the regime, within each institution, or among particular legal commitments. The choice cannot be determined by importing the metaphor of one unified political community without argument.

The theory therefore needs an account of legal pluralism. Political morality can support differentiated authority and overlapping jurisdiction rather than one centralized coherent code. Where legal orders interact, an interpretive explanation must identify the relevant historical practices and the values that justify giving each practice its particular normative role. This is a demanding extension of the theory, because the boundaries of the interpretive object become more contested.

Contemporary comparative research also reveals new empirical dimensions. Dugac and Altwicker study the classification of interpretation techniques in European Court of Human Rights decisions, showing how textual and teleological arguments can be investigated systematically (Dugac & Altwicker, 2025). Such research maps observable argumentative practices. The philosophical inference from those practices to the grounds of law requires an additional normative explanation.

Legal Realism, Pragmatism, and Critical Jurisprudence

Legal realists challenge idealized portrayals of judging by drawing attention to institutional behavior, practical consequences, professional habits, and the social contexts of decisions. Their questions are indispensable to evaluating interpretivism. If actual judges routinely act under influences that a moral theory neglects, an account of legal reasoning may be a model of justification that does not explain adjudicative behavior. The interpretivist must distinguish the normative account of what law requires from an empirical account of why officials decide as they do.

Dworkin's contrast between integrity and pragmatism in Law's Empire is best understood in terms of institutional obligations. A pragmatist may select a decision because its future consequences are expected to be socially beneficial. An integrity-based judge treats past commitments as reasons capable of constraining present choices even where immediate policy outcomes suggest a different result. This is a disagreement about the normative role of legal history, not about whether consequences are ever morally relevant.

Critical jurisprudence raises another challenge. The apparent coherence of law may reflect dominant social arrangements, selective exclusions, or institutional power. A theory presenting legal history in its best light can obscure histories of subordination if the interpreter chooses principles drawn only from dominant official narratives. The critical question is what counts as the practice whose integrity is reconstructed and whose claims receive a hearing. A philosophy of equal concern must address those excluded from the historical distribution of rights.

An interpretivist response can integrate these criticisms by treating legal records as evidence of actual coercive arrangements, not as presuppositions of moral legitimacy. Historical injustice, contested social power, and unequal access to adjudication can change the moral assessment of institutional decisions. However, the more radically the interpreter revises the understanding of the practice, the more urgent the question of fit becomes. An emancipatory moral judgment may be justified while its status as an interpretation of existing law remains disputed.

The relationship between realism and interpretivism is therefore a question about different explanatory levels. Realism investigates legal institutions as social practices and often challenges conventional pictures of judicial reasoning. Interpretivism seeks the normative significance of those practices for legal rights. Both forms of inquiry are necessary to a full jurisprudence, and neither can automatically replace the other.

Dworkin's Later Synthesis: Law, Morality, and Value

Dworkin continued to refine his account after Law's Empire. Justice in Robes (2006) revisits disagreements over legal positivism, constitutional originalism, the semantics of law, and the place of moral conviction in legal decisions. Justice for Hedgehogs (2011) develops a broader conception of the unity of value in which ethical, moral, political, and legal judgments form connected fields of reasoning. These works situate interpretivism within a more comprehensive philosophical account of value (Dworkin, 2006; Dworkin, 2011).

The later perspective matters because it clarifies why Dworkin regarded jurisprudence as inseparable from political morality. Legal interpretation concerns the justified treatment of persons through collective institutions, so it cannot be understood fully through a method that excludes questions about justice and political responsibility. The philosophical unity is not a claim that law and morality contain identical obligations. It is a claim that the structure of legal reasons can be understood only within a wider system of reasons for action and political coercion.

The unity thesis is ambitious and contested. Moral life contains apparent conflicts among liberty, equality, security, welfare, and fidelity to legitimate institutions. The interpretivist needs an account of how such conflicts are assessed and how an interpretation can be warranted when the principles themselves are contested. Dworkin's later work proposes an integrated conception of value; it does not supply an algorithm for deriving determinate judicial outcomes from a fixed set of moral axioms.

The enduring philosophical contribution of the later synthesis is methodological. It refuses to treat legal content as a question isolated from what gives legal authority its point. But it also intensifies the challenge of objectivity: if legal facts are partly moral facts, how can the discipline avoid reducing legal knowledge to the theories of political morality currently favored by judges or commentators? The answer requires a public argumentative practice in which interpretations remain open to criticism, revision, and comparison with actual institutional history.

That requirement offers a standard for the contemporary reception of interpretivism. The theory is strongest when it precisely identifies why a source matters and how a principle constrains its effect. It is weakest when the invocation of moral interpretation substitutes for the work of identifying enacted materials, legal procedures, and competing claims.

Greenberg's Moral Impact Theory and Institutional Change

Mark Greenberg's Moral Impact Theory reframes the relation between legal institutions and morality. On this account, the legal obligations generated by institutional action are a subset of the moral obligations altered by that action. A legislature, court, or agency changes facts that are morally significant: expectations, available courses of action, legitimate reliance, coordination arrangements, and public authorization. The legal content resulting from the action is its morally relevant impact, understood through a theory of how legal institutions appropriately change our practical situation (Greenberg, 2014).

This is a powerful development of the interpretivist question because it distinguishes three candidates for the law's content. The first is the linguistic content communicated by the enactment; the second is the content intended by relevant officials; the third is the change in obligations resulting from the institutional act. Greenberg argues that the last supplies the proper explanatory target. The words and intentions matter through their contribution to the moral consequences of authoritative institutional action. The view thereby challenges what he calls the standard picture, under which law is normally treated as the content of authoritative communications.

A legislature that establishes a public registration scheme can alter the duties of citizens by making compliance mutually expected and enabling others to rely on the registry. The precise legal duties are not determined solely by the legislature's individual intentions. They can depend on how the institution's public act changes what fairness and legitimate coordination require. The theory aims to explain why an enacted text can have effects beyond its literal communication while remaining a real legal act rather than a free-floating moral recommendation.

An important distinction concerns moral change and moral improvement. An institutional act may alter the moral situation without making the world better. It may create legitimate expectations that must be considered even when the institution's decision is seriously flawed. Nevertheless, the theory faces hard cases in which the institution's wrongdoing seems incapable of generating a moral duty to obey. If all legal obligations are a subset of moral obligations, what is the status of an oppressive but routinely enforced regulation that citizens and officials call law? Greenberg's account must distinguish the morally relevant impact of an act from a blanket moral endorsement of its commands.

The view also requires a principled account of identification. Many institutional acts have numerous moral effects, including effects far removed from the enactment's subject matter. Which effects count as the legal effects? Greenberg's theory relies on the character of lawmaking institutions and the appropriate way of interpreting their action to delimit the subset. That move raises a problem parallel to Dworkin's: how are the boundaries of the law's relevant institutional practice themselves constituted?

The Moral Impact Theory deepens interpretivism by identifying a specific dependence relation between action and normativity. It also reveals the enduring pressure that normative jurisprudence places on itself. A constitutive account gains force by explaining why the event matters, and acquires a burden to show why the resulting moral effect counts as law rather than as an independent ethical consequence.

Hershovitz and the Challenge to Distinctively Legal Obligations

Scott Hershovitz's essay "The End of Jurisprudence" challenges a presupposition shared by much of the Hart–Dworkin controversy. Both positions commonly assume that there are distinctively legal rights and obligations whose content must be explained. Positivists explain them mainly through social facts; interpretivists assign moral facts a more substantial role. Hershovitz questions the supposed category itself. He argues that institutions can generate moral rights and duties, some of which are conventionally called legal, without producing a separate species of normative obligation (Hershovitz, 2015).

The challenge can be understood through ordinary practices. A promise changes what one person owes another; the fact that a promise was made is an institutional or social fact with moral consequences. A rule adopted for a game can change what participants have reason to do within that practice. We can describe these consequences without positing a metaphysically distinctive kind of obligation beyond those generated by the relevant norm-governed relation. Hershovitz asks whether law is comparable. If so, some classical jurisprudential questions may originate in an avoidable taxonomy of obligations.

This argument overlaps with Greenberg's moral-impact approach while being more explicitly revisionary. A theory explaining legal obligations as altered moral obligations can preserve a subset identified by legal institutions. Hershovitz presses the idea that the subset may be classified by origin and social use without possessing a special normative essence. The philosophical difficulty concerns whether this undermines the ability to state what a court is legally required to do independently of what would be morally right all things considered.

The counterargument is that institutions routinely distinguish a legal duty from an overriding moral duty. A person may have a legal obligation to comply with an unjust judgment while possessing compelling moral reasons to resist. Lawyers, judges, and scholars need vocabulary for describing these different positions. Hershovitz can answer that such descriptions concern institutional claims, roles, consequences, and social classifications, all of which can be acknowledged without postulating a sui generis normative force. Whether the answer is adequate depends on how we analyze the truth of propositions about institutional duties.

The challenge is valuable because it targets an underlying assumption rather than choosing one side of the conventional debate. Legal interpretivism becomes more precise when it explains what kind of truth a legal proposition asserts. Is the proposition about moral duties, institutionally binding standards, authoritative reasons, or a category of normative status defined by legal practices? The theory cannot determine its grounds without clarifying the ontology of what is grounded.

Planning Theory and the Organization of Legal Authority

Scott Shapiro's Legality (2011) supplies another influential response to Dworkin. Its planning theory characterizes law as a form of social planning. Legal institutions create, adopt, and implement plans for coordinating behavior and addressing problems that collective action would otherwise leave unresolved. Plans reduce the need for participants to reconsider every underlying reason each time they act. The account explains law's procedural structures and its claim to settle questions through authorized arrangements (Shapiro, 2011).

The theory is especially important because it does not deny interpretation or normative reasoning. A complex plan can contain abstract terms, delegate discretion, establish interpretive principles, or leave room for judgment. The legal question is what plan the institution has adopted and how that plan should be understood. Shapiro offers a social explanation of the existence of the plan and of the institutional arrangements that empower particular actors to apply or revise it.

The contrast with Dworkin concerns the ultimate explanation of legal determinacy. Planning theory assigns considerable weight to the social facts that constitute authoritative plans and to the methodology those plans specify. Interpretivism stresses that choosing the justified significance of institutional practice can require political morality beyond any convention accepted by officials. Both can acknowledge that a judge must read statutes, decisions, and constitutional arrangements within a larger organizational structure. They disagree over what grounds the interpretation's authority.

A persistent difficulty for planning theory is the interpretation of plans that contain competing purposes and ambiguous delegations. The interpreter must decide what a rational plan would mean under conditions never anticipated by its designers. Those judgments may invoke principles of good planning, fairness, or legitimacy. A positivist can contend that the plan's social existence remains independent of these evaluative decisions. An interpretivist can reply that the evaluations determine the plan's actual legal effects. The debate returns to the distinction between an interpretation that selects a good response and one that identifies existing law.

The strength of planning theory is its account of law as organized cooperative agency. Its challenge to interpretivism is that normative ideals can be internal to the evaluation of plans without thereby constituting the plans' legally relevant content. Interpretivism must show where planning explanations end and why moral justification must supply the additional grounding relation.

Recent Reconstruction: Validity, Dual Character, and Weak Integrity

Contemporary legal philosophy continues to revise the categories inherited from Hart and Dworkin. Thomas Adams's "Criteria of Validity," published online in December 2024 and appearing in 2025, questions familiar ways of specifying the relationship between legal validity and normative assessment. Adams's contribution directs attention to the form of validity criteria and the relation between a legal act's constitutive conditions and its substantive evaluation (Adams, 2025). The methodological lesson for interpretivism is that a theory must specify whether moral conditions determine a source's existence, its validity, its application, or its legal consequences.

Brian Flanagan and Guilherme de Almeida examine the "dual character" of the concept of law. Their 2024 analysis places legal concepts in a broader debate about concepts with descriptive and evaluative dimensions (Flanagan & de Almeida, 2024). A concept can classify a social institution while also inviting judgments about what that institution ought to be. The presence of such judgments in ordinary legal thought is significant, but it still leaves open whether the legal institution's constitutive grounds are themselves moral facts. The debate makes a distinction between conceptual evaluation and ontological dependence necessary.

Christian Hiebaum's "Law as Weak Integrity: Deflating Dworkinianism," first published August 4, 2026, offers a more direct revision. Hiebaum attempts to preserve central interpretivist insights while drawing closer to positivist and realist explanations. He rejects the expectation that difficult legal questions ordinarily possess uniquely correct answers determined by the best possible moral justification of the practice. Instead, principles may make a range of interpretations reasonable while leaving some disputes underdetermined (Hiebaum, 2026).

Weak integrity matters because it isolates the value of coherence from the stronger metaphysical claim of universal moral determination. Legal participants can have genuine disagreements about standards without presupposing that exactly one scheme of political morality fixes the result. The idea also makes legal criticism possible: a decision can be unsupported by any plausible account of the practice even if several other accounts remain defensible. This is a middle position, but its philosophical coherence depends on explaining whether a range of reasonable interpretations supplies actual law or merely limits permissible institutional choice.

The alternative interpretations are not interchangeable. Adams concerns the structure of validity, Flanagan and de Almeida the nature of legal concepts, and Hiebaum the role of coherence and moral reasoning. Together they demonstrate that the live debate is no longer exhausted by the binary claim that law is either a social fact or a moral fact. Legal validity, grounds, concept possession, authority, determinacy, and adjudicative responsibility have become distinct explanatory questions. An accurate interpretivism must keep them connected without treating them as one undifferentiated problem.

Legal Argument as Public Reason

If interpretation depends on political morality, the form of public justification becomes a condition of responsible adjudication. A court exercises legally constituted powers over parties who are entitled to understand the reasons for its decision. A judgment must identify its authoritative materials, explain their relevance, show how competing principles are addressed, and articulate why the result follows from the jurisdiction's law. These are institutional demands even when philosophers disagree about legal ontology.

The interpretivist can defend public reason as more than good presentation. The duty to justify coercion to those subject to it helps explain why legal history carries weight. The parties have a claim to consistent treatment through publicly accessible standards, rather than outcomes derived from the judge's private moral commitments. Institutional justification accordingly contains reasons to respect legislative procedures, jurisdictional competence, settled interpretations, and rights of participation.

Yet transparency of reasons cannot substitute for a theory of legal grounds. A judge may provide a sophisticated moral argument for a decision while candidly acknowledging that the existing law permits an opposite result. Whether the judgment identifies law or develops it remains a separate question. Public reasoning tests the quality of decision-making, but it cannot make any reason invoked by a court legally constitutive merely through its public articulation.

The difficulty also arises in plural societies. A legal institution may serve people who hold incompatible ethical or religious convictions. An interpretivist justification must explain how coercive decisions can be defended through principles appropriate to a public practice, rather than merely through one community's comprehensive doctrine. Political morality in this setting requires attention to equal standing, contestable reasons, and the procedural rights of the losing party.

These requirements form a practical standard for evaluating interpretivist theories. A theory succeeds as jurisprudence only if it can be translated into publicly assessable grounds and principled limits on judicial authority. Otherwise the promise to justify legal practice through morality risks becoming a transfer of political power to those able to speak in the language of moral principle.

Computational Interpretation and the Distinction Between Prediction and Grounds

Computational methods can identify patterns in statutes, judicial opinions, contracts, and administrative decisions. Large language models can produce summaries, propose semantic readings, compare passages, and forecast how courts might reason. Such capacities matter to legal interpretation because legal knowledge depends on the accurate handling of extensive institutional records. They also expose the distinction between reproducing patterns of legal discourse and explaining what makes a proposition of law true.

Yonathan Arbel and David A. Hoffman propose "generative interpretation" in the specific domain of contracts. Their 2024 study examines how language models can help estimate ordinary meaning in context, assess ambiguity, and evaluate extrinsic evidence from actual agreements (Arbel & Hoffman, 2024). The paper addresses questions of contractual meaning and adjudicative evidence. Its methodological contribution does not settle the broader jurisprudential problem of whether morality partly constitutes legal content.

Similarly, Dugac and Altwicker investigate the classification of textual and teleological arguments in European Court of Human Rights decisions (Dugac & Altwicker, 2025). Their approach can help reveal which interpretive strategies judges publicly employ. A model that labels an argument as teleological reports a feature of legal reasoning. It does not thereby establish whether teleology is an ultimate ground of the rights decided.

There are corresponding limits concerning reliability. Dahl and colleagues document legal hallucinations and failures of legal authority retrieval in widely used language models (Dahl et al., 2024). A generated legal explanation can appear doctrinally plausible while supplying nonexistent cases or misdescribing authoritative material. In an interpretivist practice where institutional history is constitutive, such errors are particularly serious: an elegant moral synthesis grounded on fictitious authority fails the preliminary test of fit.

The philosophical lesson is general. Statistical prediction of what judges say, textual analysis of what laws communicate, and normative explanation of what institutions have made law are different tasks. Machine assistance can improve evidence retrieval and make patterns of disagreement visible, but a model's capacity to generate a legal answer is not proof of that answer's institutional authority. An account of legal content must still state which records count, what temporal version applies, and why the relevant acts and principles have their claimed legal significance.

This distinction also clarifies what the Artificial Era contributes to jurisprudential inquiry. New nonbiological systems can participate in the production and analysis of legal language, change access to legal evidence, and influence institutional workflows. The interpretivist problem remains the determination of legal rights under historically constituted institutions. When computational outputs are delegated administrative or judicial roles, the grounding question becomes sharper: what authorization makes those outputs legally operative, and which publicly reviewable principles justify their force? This question connects philosophical interpretation to institutional responsibility without converting legal interpretivism into a technical theory of artificial intelligence.

A Critical Audit of the Interpretivist Argument

The interpretivist case should be tested through its strongest claims. The first is explanatory: recognizing an institutional fact cannot alone explain the fact's normative effect. This is persuasive at a high level of generality. A vote or judgment matters legally within a normative practice. But both positivists and interpretivists can accept that description. The contested premise is that the relevant constitutive norms must be moral principles rather than socially existing standards of institutional authority.

The second is methodological: legal participants sometimes make arguments that cannot be understood as mechanical applications of agreed rules. This claim is extensively supported by jurisprudential practice. The inference to interpretivist grounding remains uncertain, however. Such arguments may be applications of incorporated moral standards, exercises of authorized discretion, or attempts to change the rules of legal interpretation. Distinguishing those possibilities requires attention to the institution's actual procedures and patterns of recognition.

The third is political: legitimate coercion requires principled justification. The claim is normatively attractive and supports the duty of courts to give reasons. Its move into jurisprudence is the most ambitious step. The fact that a state ought to justify a decision through equal concern does not, without further argument, prove that its best justification determines its presently existing legal rights. A constitution may confer the power to enact unjust but valid laws; criticism of their legitimacy and identification of their legal force answer different questions.

The fourth is the right-answer thesis: interpretation can yield determinate existing entitlements even when the law is controversial. This insight corrects the assumption that disagreement automatically entails absence of law. Yet its universalized form exceeds the evidence. Some disputes involve genuine underdetermination, conflicting institutional instructions, or permissions for future lawmaking. Any adequate interpretivism must distinguish cases where interpretation discovers an existing position from cases where legally authorized actors make a new one.

The fifth is coherence: the law's intelligibility requires that interpretations reconcile particular decisions within a principled scheme. Coherence is a substantial reason for institutional consistency. It can also be overextended when applied to fragmented legal orders, power-laden traditions, or legislatively intentional compromise. A convincing account must explain why the relevant unit of law should be coherent and how far that requirement can survive contradictory authoritative acts.

The audit yields a unified result. Interpretivism identifies a genuine deficit in purely linguistic and behavioral descriptions of law: legal contents are normatively articulated institutional effects. Whether those effects are constituted by moral facts remains a further philosophical issue, requiring arguments specific to the institutional process and type of legal proposition at stake. This separation is the main instrument for evaluating the theory without either dismissing its insight or overstating its achievement.

Open Philosophical Questions

The first unresolved question is how precisely to distinguish the moral reasons for a legal institution's authority from the grounds of each legal proposition it generates. An institution may enjoy a general justification for existing without making all its acts morally justified. A law may be operative yet deeply unjust. A theory must identify whether interpretive moral principles govern recognition, validity, content, legal effect, or legitimate enforcement, and how those relations differ.

The second concerns determinacy. Under what conditions does a sufficiently coherent scheme of institutional principles determine one legally correct answer, several permissible answers, or no answer? A theory needs standards for comparing candidate interpretations, assessing conflicts of principle, and distinguishing principled uncertainty from mere judicial error. Hiebaum's weak-integrity proposal shows why the question remains active in 2026.

The third concerns the relation between legal and moral obligation. Can one have a legal duty while lacking every corresponding moral duty? If so, what is the ontological kind of that duty and how does interpretivism explain it? If the duty is a species of moral obligation, how should the theory describe immoral legal commands and practices that are legally authoritative but morally indefensible?

The fourth concerns institutional plurality. Does integrity belong to an entire political community, a jurisdiction, a court system, or a doctrinal field? Cross-border legal orders and overlapping administrative jurisdictions may possess no single political morality. A credible general theory requires criteria for identifying an interpretive community and for resolving conflicts between its institutions.

The fifth concerns interpretive evidence. Which acts, documents, conventions, and historical events must be established before moral justification begins? The answer is increasingly important when digitized legal corpora combine obsolete enactments, reversed judgments, unofficial translations, and machine-generated summaries. The integrity of legal explanation depends upon the integrity of its provenance.

The sixth concerns authorized change. If courts reason by principles that were not previously settled, how do we distinguish the discovery of existing law from the development of law by a legally empowered institution? The distinction cannot be resolved merely by saying that all good decisions are interpretive. It requires an account of how adjudicative competence is distributed and constrained.

These questions form a connected research program rather than a collection of residual doubts. Each asks how institutions transform historically specific actions into standards that can be asserted, contested, and enforced as law. The question at the center of legal interpretivism survives because such transformations involve social authority, normative reasoning, and temporally situated legal knowledge simultaneously.

Philosophical Synthesis: Institutional History and Justified Legal Significance

The inquiry establishes a defensible core for legal interpretivism. Institutional history determines which political community and legal practice are at issue. Enactments, judgments, official recognitions, and procedural changes supply indispensable facts. Their legal significance requires explanation through the practice's standards of authority and justification. An interpretivist theory argues that moral principles enter this explanation constitutively. Its strongest insight is the refusal to infer legal content directly from the bare occurrence or linguistic form of an official act.

The historical development of the theory explains how this insight emerged. Hart showed that law is a social institution structured by accepted rules and official practices. Dworkin's early writings demonstrated the importance of legal principles and challenged an oversimplified division between rule application and discretion. Law's Empire recast the dispute as an inquiry into the grounds of legal propositions, using fit, justification, and integrity to explain legal continuity. Later nonpositivist accounts refined the relation between institutional action and moral effect, while positivist and critical responses pressed questions about validity, authority, coherence, and indeterminacy.

One philosophical consequence is that methods of legal interpretation inherit their authority from more fundamental institutional commitments. There can be sound legal reasons to prioritize public meaning, precedent, procedure, or moral rights, and different legal fields may give these reasons different weight. No single favored technique can be treated as the essence of interpretivism. The theory concerns what makes a technique legally appropriate and why its application identifies existing legal positions.

A second consequence concerns moral argument. A judge's duty to reason justly and a philosopher's explanation of legal truth are related but distinguishable claims. The presence of moral argument in a judicial decision is evidence that moral principles matter to legal practice. Whether they constitute legal content depends on the theory of the practice's authority. This distinction supplies a standard for evaluating both interpretivist proofs and positivist replies.

A third consequence concerns objectivity and institutional limits. The legal system's historical materials constrain interpretation even when the interpretive grounds are partly moral. Such constraints have their own moral significance because citizens must be able to understand and contest the public use of power. At the same time, disagreement about political morality may leave some legal questions underdetermined. The recognition of genuine indeterminacy can preserve the difference between interpretation and authorized legal innovation.

A fourth consequence concerns the status of law in unjust systems. Legal interpretivism must allow accurate description and criticism of oppressive institutions. The morally justified significance of an institutional act can differ from approval of its substantive policy. This difference explains some legal effects under conditions of injustice while exposing the limits of theories that identify all legal obligations with justified moral duties.

The resulting synthesis is an institutional account of interpretive responsibility. To interpret law responsibly is to establish the relevant history, identify the standards through which legal authority operates, reconstruct the principles that explain legally significant effects, and evaluate rival conclusions in light of both historical constraint and publicly defensible justification. Whether a pure moral-grounding theory or a more limited account of integrity best explains this activity remains open. The synthesis provides a framework for assessing that dispute without assuming its result.

Conclusion

Legal interpretivism is a theory of the relationship between institutional history and legal truth. Its principal question asks why enactments, judgments, conventions, and other official acts have the legal effects they do. Dworkin's distinctive answer joins fit with justification and treats integrity as a requirement of the community's principled treatment of its members. The theory therefore reaches beyond the observation that judges interpret statutes or sometimes appeal to justice. It offers a constitutive explanation of existing legal rights and obligations.

The historical reconstruction has shown that the theory emerged from an exchange with social-sources jurisprudence, developed through the problem of legal principles and judicial discretion, and attained its mature form in the account of law as integrity. Contemporary debate extends the issue through inclusive and exclusive positivism, the philosophy of authority, legal semantics, moral-impact accounts, and objections to distinctively legal obligations. Research published in 2024–2026 further distinguishes questions of legal validity, dual-character concepts, and weakened forms of integrity.

The critical analysis supports four conclusions. Institutional history is indispensable to the identification of law. Moral reasoning can be indispensable to the justified determination of legal effects. Those propositions do not themselves prove that moral principles are the ultimate constitutive grounds of all legal content. The strongest interpretivist theories must therefore explain the exact dependence relation among social sources, institutional competence, and political morality, including cases of unjust law and genuine legal indeterminacy.

The theoretical accomplishment of interpretivism is to make the determination of legal content answerable to an explanation of institutional significance. Its continuing burden is to connect that explanation with the social and procedural facts through which law is publicly known, contested, and changed. This burden is fundamental to legal philosophy because law claims to bind persons through a historically established practice of collective authority.