This major collection of essays offers the first serious challenge to the traditional view that ancient and modern ethics are fundamentally opposed. In doing so, it has important implications for contemporary ethical thought, as well as providing a significant re-assessment of the work of Aristotle, Kant and the Stoics. The contributors include internationally recognised interpreters of ancient and modern ethics. Four pairs of essays compare and contrast Aristotle and Kant on deliberation and moral development (John McDowell and Barbara Herman), eudaimonism (T. H. Irwin and Stephen Engstrom), self-love and self-worth (Jennifer Whiting and Allen Wood), and practical reason and moral psychology (Julia Annas and Christine Korsgaard). The final pair of essays introduces the Stoics as an example of how the apparently antithetical views of Aristotle and the Stoics might be reconciled (John Cooper and J. B. Schneewind).