Singer tackles "the big one," the meaning of life, in this book, and damned if he doesn't figure it out. In my opinion. (Your mileage may vary.) His approach is take you through a few thousand years of philosophy/economics/political science to get to the answer that a life spent trying to help others and reduce suffering is really the most moral, and most fulfilling one. It's a fascinating, and important, book. OK. I do have one small quibble. (Forgive me, I'm a quibbler.) Singer, correctly, I think, sees some uses of psychotherapy as self-indulgent and an attempt to rationalize away the moral emptiness that comes from leading a materialistically oriented life. However, I think he underestimates the need for people to come to terms with the forces that create a self that can't keep its "owner" from suffering. You have to be able to help yourself as well as others. The process of individuation, of becoming your own creative person, is important in human happiness. It's not as moral as purely devoting yourself to others, but I think there is room for both. I don't think Singer would disagree (maybe he would?). That, I think minor, quibble aside, I think the book is a really cool exploration of a really important question that we all ask ourselves, but that few (non-religious types) have spent enough time thinking about. I, for one, am glad that Peter Singer is around and thinking about it.