Contents -- Preface -- I. INTRODUCTION -- 1. Background for the Uninitiated -- II. MORALITY AND THE POSSIBILITY OF RATIONAL COOPERATION -- 2. Prisoners, Paradox, and Rationality -- 3. Second Thoughts on Self-interest and Morality -- 4. Maximization Constrained: The Rationality of Cooperation -- 5. Prisoner's Dilemma and Resolute Choice -- III. EVIDENTIAL VERSUS CAUSAL DECISION THEORY -- 6. Newcomb's Problem and Two Principles of Choice -- 7. Counterfactuals and Two Kinds of Expected Utility -- 8. Counterfactuals and Newcomb's Problem -- 9. Causality, Decision, and Newcomb's Paradox -- 10. Where the Tickle Defense Goes Wrong -- 11. Reply to Jackson and Pargetter -- 12. Newcomb's Problem: A Stalemate -- 13. Common Causes, Smoking, and Lung Cancer -- IV. IS THE PRISONER'S DILEMMA A NEWCOMB PROBLEM? -- 14. Prisoners' Dilemma Is a Newcomb Problem -- 15. Is the Symmetry Argument Valid? -- 16. Not Every Prisoner's Dilemma Is a Newcomb Problem -- V. COOPERATION IN REPEATED AND MANY-PERSON PRISONER'S DILEMMAS -- 17. The Insoluble Problem of the Social Contract -- 18. Utility Maximizers in Iterated Prisoner's Dilemmas -- 19. The Emergence of Cooperation among Egoists -- 20. Individual Sanctions, Collective Benefits -- Biographical Notes -- Bibliography of Works Cited.