This book challenges, with several powerful arguments, some of our deepest beliefs about rationality, morality, and personal identity. The author claims that we have a false view of our own nature; that it is often rational to act against our own best interests; that most of us have moral views that are directly self-defeating; and that, when we consider future generations the conclusions will often be disturbing. He concludes that non-religious moral philosophy is a young subject, with a promising but unpredictable future.

Reviews

"Very few works in the subject can compare with Parfit's in scope, fertility, imaginative resource, and cogency of reasoning."--P.F. Strawson, The New York Review of Books

"Complex, brilliant, and entertaining....This book is chock-full of impressive arguments, many of which seem destined to become part of the standard analytic repertory....It is an understatement to say that it is well worth reading."--International Studies in Philosophy

"Extraordinary...Brilliant...Astonishingly rich in ideas...A major contribution to philosophy: it will be read, honoured, and argued about for many years to come."--Samuel Scheffler, Times Literary Supplement

"A brilliantly clever and imaginative book...Strange and excitingly intense."--Alan Ryan, Sunday Times (London)

"Not many books reset the philosophical agenda in the way that this one does....Western philosophy, especially systematic ethics, will not be the same again."--Philosophical Books