I. Morality : its motive and content -- 1. Glaucon's and Adeimantus' interrogation of Socrates -- 2. Hume's genealogy of morals -- 3. Hume's theory extended -- 4. From Hume to Kant -- 5. The laws of morality as the laws of freedom and the laws of freedom as the laws of morality -- 6. Classical utilitarianism -- 7. A fresh argument for utilitarianism -- 8. The consequentialist argument -- 9. A first-order ethic of solidarity and reciprocity -- II. Justice -- 10. Neo-Aristotelian reflections on justice -- III. Metaethics -- 11. Objectivity in ethics -- 12. Miscellanea metaethica.