Chapters in this book

1. Frontmatter i
2. Contents vii
3. Acknowledgments ix
4. Introduction 3
5. Chapter 1. Groups That Work 7
6. Chapter 2. How Altruism Evolves 19
7. Chapter 3. Equivalence 31
8. Chapter 4. From Nonhumans to Humans 47
9. Chapter 5. Psychological Altruism 59
10. Chapter 6. Altruism and Religion 75
11. Chapter 7. Altruism and Economics 93
12. Chapter 8. Altruism in Everyday Life 115
13. Chapter 9. Pathological Altruism 133
14. Chapter 10. Planetary Altruism 141
15. Notes 151
16. Works Cited 159
17. Index 173