ISBN On What Matters ( Two-volume set ) book 1440 pages

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 - leading to his own ground-breaking synthetic conclusion. Along the way he discusses a wide range of moral issues such as the significance of consent treating people as a means rather than an end and free will and responsibility. On What Matters is already the most-discussed work in moral philosophy: its publication is likely to establish it as a modern classic which everyone working on moral philosophy will have to read and which many others will turn to for stimulation and illumination.