Lawrence B. Solum

The Legal Theory Lexicon series usually explicates some concept in legal theory, jurisprudence, or philosophy of law. But what are those fields and how do they relate to each other? Is "jurisprudence" a synonym for "philosophy of law" or are these two overlapping but distinct fields? Is "legal theory" broader or narrower than jurisprudence? And why should we care about this terminology? As always, this entry in the Legal Theory Lexicon series is aimed at law students, especially first-year law students with an interest in legal theory

The Aretaic Turn in Constitutional Theory argues that an institutional approach to theories of constitutional interpretation ought to be supplemented by explicit focus on the virtues and vices of constitutional adjudicators. Part I, The Most Dysfunctional Branch, advances the speculative hypothesis that politicization of the judiciary has led the political branches to exclude consideration of virtue from the nomination and confirmation of Supreme Court Justices and to select Justices on the basis of the strength of their commitment to particular positions on particular issues and the fervor of their ideological passions. Part II, Institutionalism and Constitutional Interpretation, engages Cass Sunstein and Adrian Vermeule's recent essay, "Interpretation and Institutions." Sunstein and Vermeule contend that theories of constitutional interpretation are most fundamentally flawed because of their failure to take an institutional turn, but their supporting arguments lead to a related but quite distinct conclusion. Only a theory of judicial character can supply the diagnosis for the ills that Sunstein and Vermeule identify: constitutional theory must take an aretaic turn. Part III, Making the Aretaic Turn in Constitutional Theory, sketches an alternative approach to judicial review and constitutional interpretation that is rooted in contemporary virtue ethics. In Part IV, Constitutional Virtues and Vices, this sketch is given flesh and bones in the form of a theory of constitutional virtue and vice. Excellence in constitutional adjudication requires the virtues of judicial courage, judicial temperament, judicial temperance, judicial intelligence, and judicial wisdom (or phronesis). Most importantly, a virtuous constitutional interpreter must have the virtue of justice, which includes as components impartiality, lawfulness, and legal vision. Part V, The Aretaic Reconstruction of the Institutional Critique, returns to institutionalism as an approach to the theory of constitutional interpretation and argues that institutionalists cannot coherently refrain from making the aretaic turn. The article ends with speculation about the possibility of a path to the restoration of judicial virtue.

This essay investigates the indeterminacy thesis - roughly the claim that the content of authoritative legal materials (such as the texts of constitutions, statutes, cases, rules, and regulations) does not determine the outcome of particular legal disputes. The indeterminacy thesis can be formulated as either "strong" or weak." The strong version of the indeterminacy thesis is demonstrably false, but several weak versions of the thesis are true but lack the radical implications of strong indeterminacy.The strong indeterminacy thesis is the claim that all cases are "hard" cases - or that in any case any conceivable result can be derived from existing legal doctrine. Strong indeterminacy does not hold if there are easy cases - cases in which some outcomes cannot be legally correct. For example, if it were the case that the first paragraph of this abstract did not slander Gore Vidal, then there would be at least one easy case, and strong indeterminacy would be false.Weak versions of the indeterminacy thesis include the claim that important cases are indeterminate, that the law does not necessarily determine outcomes, or that every case could become indeterminate if political conditions supported indeterminacy. These weaker claims may be true, but they lack the critical bite associated with strong indeterminacy.The essay also distinguishes between "determinacy," "indeterminacy," and "underdeterminacy." The law is "determinate" with respect ot a given case if and only if the set of results that can be squared with the legal materials contains only one member. The law is "indeterminate" with respect to a given case if and only if the set of results that can be squared with the legal materials is identical with the set of all imaginable results. The law is "underdeterminate" with respect to a given case if and only if the set of results that can be squared with the legal materials is a nonidentical subset of the set of all imaginable results.This article was first published in 1987, and some of the author's views have been revised in interim.