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. In this first volume Parfit presents a powerful new treatment of reasons and rationality, 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.

• We started tracking this book on August 16, 2014.
• This book was $19.24 when we started tracking it.
• The price of this book has changed 47 times in the past 4,069 days.
• The current price of this book is $9.99 last checked 8 hours ago.
• The lowest price to date was $9.99 last reached on October 6, 2025.
• This book has been $9.99 2 times since we started tracking it.
• The highest price to date was $26.49 last reached on June 30, 2015.
• This book has been $26.49 one time since we started tracking it.
• This book is currently at its lowest price since we started tracking it.

• Politics & Social SciencesPhilosophyEthics & Morality
• Politics & Social SciencesPhilosophyPhilosophy

• Publication Date: May 26, 2011
• Text-to-Speech: Disabled
• Lending: Disabled
• Print Length: 589 Pages
• File Size: 846 KB