Though not as well known as Plato and Aristotle, the Hellenistic philosophers made a considerable and lasting contribution, exerting an important influence on the development of modern philosophy. These eleven essays look at some of the central figures and concerns of the period. Besides the editors, the contributors include Julia Annas, Richard Sorabji, Michael Frede, Claude Imbert, Jacques Brunschwig, Gisela Striker, and David Sedley.