Overview of fundamental work in deontic logic.

This paper addresses the nature and relationship of morality and self-interest, arguing that what we morally ought to do almost always conflicts with what we self-interestedly ought to do. The concept of morality is analyzed as being essentially and radically other-regarding, and the category of the supererogatory is explained as consisting in what we morally ought to do but are not socially expected to do. I express skepticism about whether there is a coherent question, ‘Which ought I all things considered (...) to obey?’ and suggest that the best substitute is a question about which is more important for me. Importance for a person, in turn, is explained as dependent upon what a person is disposed to care about. I suggest that morality and self-interest are both relatively unimportant for us when compared with our other ends. (shrink)

Situationist deontic logic is a model of that fraction of normative discourse which refers to only one situation and one set of alternatives. As we can see from a whole series of well-known paradoxes, standard deontic logic (SDL) is seriously mistaken even at the situationist level. In this paper it is shown how a more realistic deontic logic can be based on the assumption that prescriptive predicates satisfy the property of contranegativity. A satisfactory account of situation-specific norms is a necessary (...) prerequisite for a successful treatment of more complex normative structures. (shrink)

Legal positivism lacks a comprehensive theory of legal obligation. Hart's account of legal obligation, if successful, would explain only how the rule of recognition obligates officials. There is nothing in Hart's account of social obligation and social norms that would explain how the legal norms that govern citizen behavior give rise to legal obligations. However, we cannot give a theoretical explanation of the concept of legal obligation without a theoretical explanation of the concept of obligation. If legal, social and moral (...) obligations are three instances of the kind defined by “obligation,” then we cannot successfully explicate the nature of legal, social or moral obligations without a successful general conceptual theory of obligation. In what follows, I attempt to develop what I take to be the central elements of the general concept of obligation. I argue that obligations are (1) associated with mandatory prescriptions; (2) reasons for action; (3) exclusionary in the sense that certain reasons are excluded as an excuse of justification for non-performance; and (4) “binding” in the sense that they have a special normative force. At the end of the paper, I briefly argue that our shared concept of obligation is indeterminate with respect to one theoretically important case, the issue of whether the rules of a crime gang that includes some sort of rule-defining procedures for making rules governing members obligate gang members if accepted as legitimate by the members. (shrink)