Moral Obligation as a Conclusive Reason: On Bernard Williams’ Critique of the Morality System

Bernard Williams’ critique of the morality system, as illustrated in his reading of Aeschylus’ Agamemnon, is intended to show both that real moral conflicts can arise, and that a moral obligation is merely one reason among others and can be defeated by the thick concepts of a shared ethical life. In response, I want to advance two lines of argument. First, when Williams argues that a moral obligation can be the locus of moral conflict, a further step is required to explain why one should feel regret for not acting on a defeated reason. Second, Williams presupposes that, when a conflict is resolved, the conclusive reason will be a thick ethical concept, but there is no compelling justification for that assumption.