Preface and acknowledgments; Part I. A Plea for Mechanisms: 1. Introduction; 2. Explaining by mechanisms; 3. Proverbial mechanisms; 4. Mechanisms in Montaigne; 5. Mechanisms in Tocqueville; 6. Some elementary mechanisms; 7. Molecular mechanisms; 8. From mechanisms to laws; 9. A plea for disaggregation; Part II. Emotions Before Psychology: 1. Introduction; 2. Aristotle on the emotions; 3. The French moralists; 4; Emotion in literature; Part III. Social Emotions in Historical Context: 1. Introduction; 2. Shame and social norms; 3. Envy in social life; 4. Honor, duels, and feuds; Part IV. Rationality and the Emotions: 1. Introduction; 2. The nature of emotion; 3. Rationality and the emotions; Appendix; Part V. Alchemies of the Mind: 1. Introduction; 2. Transmutation; 3. Misrepresentation; Coda.