On What Matters

On What Matters is a major work in moral philosophy. It is the long-awaited follow-up to Derek Parfit''s 1984 book Reasons and Persons, one of the landmarks of twentieth-century philosophy. Parfit now presents a powerful new treatment of reasons, rationality, and normativity, and a critical examination of three systematic moral theories - Kant''s ethics, contractualism, and consequentialism - lead...