The discussion of Kant from last lecture continues with a statement and explication of his first formulation of the categorical imperative: act only in such a way that you can will your maxim to be a universal law. Professor Gendler shows how Kant uses the categorical imperative to argue for particular moral duties, such as the obligation to keep promises. In the second part of the lecture, Philippa Foot’s Trolley Problem is introduced, which poses the problem of reconciling two powerful conflicting moral intuitions. A critique of Foot’s solution to the problem is explored, and the lecture ends with Judith Jarvis Thomson’s proposed alternative.

1. Introduction
2. The Ring of Gyges: Morality and Hypocrisy
3. Parts of the Soul I
4. Parts of the Soul II
5. The Well-Ordered Soul: Happiness and Harmony
6. The Disordered Soul: Thémis and PTSD
7. Flourishing and Attachment
8. Flourishing and Detachment
9. Virtue and Habit I
10. Virtue and Habit II
11. Weakness of the Will and Procrastination
12. Utilitarianism and its Critiques
13. Deontology
14. The Trolley Problem
15. Empirically-informed Responses
16. Philosophical Puzzles
17. Punishment I
18. Punishment II
19. Contract & Commonwealth: Thomas Hobbes
20. The Prisoner's Dilemma
21. Equality
22. Equality II
23. Social Structures
24. Censorship
25. Tying up Loose Ends
26. Concluding Lecture

Philosophy and the Science of Human Nature pairs central texts from Western philosophical tradition (including works by Plato, Aristotle, Epictetus, Hobbes, Kant, Mill, Rawls, and Nozick) with recent findings in cognitive science and related fields. The course is structured around three intertwined sets of topics: Happiness and Flourishing; Morality and Justice; and Political Legitimacy and Social Structures.