Outlines of Scepticism, by the Greek philosopher Sextus Empiricus, is a work of major importance. It is the fullest extant account of ancient Scepticism, and also one of our most copious sources of information about the other Hellenistic philosophies. Moreover, the rediscovery of Sextus in the sixteenth century brought about a revolution in philosophy. Anyone interested in the history of philosophy must have at least an acquaintance with Sextus, and for students of Hellenistic philosophy his writings are indispensable. Julia Annas and Jonathan Barnes provide an accurate and readable English translation of the Outlines, with a short introduction and brief annotation.