Introduction Jon Miller; Part I. Textual Issues: 1. On the unity of the Nicomachean Ethics Michael Pakaluk; Part II. Happiness: 2. Living for the sake of an ultimate end Susan Sauvé; 3. Contemplation and Eudaimonia in the Nicomachean Ethics Norman O. Dahl; 4. Aristotle on Eudaimonia, Nous, and divinity A. A. Long; Part III. Psychology: 5. Aristotle, agents, and action Iakovos Vasilou; 6. Wicked and inappropriate passion Stephen Leighton; 7. Perfecting pleasures: the metaphysics of pleasure in Nicomachean Ethics X Christopher Shields; 8. Aristotle's definition of non-rational pleasure and pain and desire Klaus Corcilius; 9. Non-rational desire and Aristotle's moral psychology Giles Pearson; Part IV. Virtues: 10. Beauty and morality in Aristotle T. H. Irwin; 11. Justice in the Nicomachean Ethics Book V Hallvard Fossheim.