The weak natural law thesis asserts that any instance of law is either a rational standard for conduct or defective. At first glance, the thesis seems compatible with the proposition that the validity of a law within a legal system depends upon its sources rather than its merits. Mark C. Murphy has nonetheless argued that the weak natural law thesis can challenge this core commitment of legal positivism via an appeal to law’s function and defectiveness conditions. My contention in the (...) current paper is that in order to make good on the challenge, the defender of the weak natural law thesis should appeal explicitly to the common good, understood as the principal normative reason in the political domain. In section I I outline the main implications of the weak natural law thesis and clarify a common misunderstanding regarding its explanatory role. Section II then argues for the indispensability of the common good to the natural law jurisprudential thesis on the grounds that it has an essential role to play in a natural law account of law’s defectiveness conditions and the presumptive moral obligatoriness of legal norms. Finally, in section III I examine the compatibility of a strengthened version of the weak natural law thesis with legal positivism in light of the centrality of the common good to the natural law jurisprudential position. (shrink)

In his work, Jules Coleman has held that the rule of recognition, if conceived of as a shared cooperative activity, should be the gateway through which to incorporate moral constraints on the content of law. This analysis, however, leaves unanswered two important questions. For one thing, we do not know when or even why morality becomes a criterion of legality. And, for another thing, we still do not know what conception of morality it is that we are dealing with. In (...) this article, we will attempt to clarify in greater depth what relations there are between the social practice of law and morality. We will thus see how the cooperative nature of social practices imbues law with a moral force, and how this makes it possible to establish a "weak" connection between law and morality: To see this, we will need to single out some basic features of cooperative social practices, thus setting out a suitable framework for the view just mentioned. (shrink)

This article considers natural law perspectives on the nature of law. Natural law theories are united by what Mark Murphy calls the natural law thesis: law is necessarily a rational standard for conduct. The natural law position comes in strong and weak versions: the strong view holds that a rational defect in a norm renders it legally invalid, while the weak view holds that a rational defect in a legal norm renders it legally defective. The article explores the motivations for (...) the natural law position, before considering three lines of natural law argument found in the literature. I conclude by examining the arguments offered by John Finnis and Murphy in support of the weak natural law view. I suggest that these arguments fail to impugn the strong natural law thesis. Indeed, the functional argument outlined by Murphy provides a plausible route to a hybrid natural law view that incorporates both weak and strong claims. (shrink)

This article examines whether a retributivist conception of punishment implies legal moralism and asks what liberalism implies about retributivism and moralism. It makes a case for accepting the weak retributivist thesis that culpable wrongdoing creates a pro tanto case for blame and punishment and the weak moralist claim that moral wrongdoing creates a pro tanto case for legal regulation. This weak moralist claim is compatible with the liberal claim that the legal enforcement of morality is rarely all‐thing‐considered desirable. Though weak (...) moralism has some plausibility, it does not follow from weak retributivism if legitimate state functions are limited in certain ways. (shrink)

This paper guides the reader through the use of functions in contemporary legal philosophy: in developing those philosophies and through methodological debates over their proper role. This paper is broken into two sections. In the first I canvass the role of functions in the legal philosophies of several mid to late twentieth century Anglo-American general jurisprudents whose theories are still common topics of discussion: Ronald Dworkin, H.L.A. Hart, Lon L. Fuller, John Finnis, and Joseph Raz. In the second, I examine (...) contemporary arguments over the role of functions in the methodology of legal philosophy. (shrink)

This paper is intended to be a summary of the author's views on the relationship between law and morality worked out over the past three decades in jurisprudence. The paper preliminarily clarifies the matter by isolating some lines of cleavage separating different questions askable about this relationship. With this done, the author argues for two theses. One, that judges are obligated to use morality in their decisions in particular cases; and two, that the morality judges are obligated to use in (...) their judicial reasonings, is best seen as the natural lawyer sees it, namely, as being part of the law that obligates judges in their role as judges. The author not only believes these theses to be true; he also thinks that these theses are practically important, in that their acceptance by judges makes for better judging. (shrink)