A Companion to Ancient Philosophy provides a comprehensive and current overview of the history of ancient Greek and Roman philosophy from its origins until late antiquity. This volume of newly contributed papers is distinctive in including contributions from both rising stars and senior scholars, and in integrating what were until recently pictured as two conflicting traditions, analytic and continental. The papers treat central topics in ancient philosophy, such as the problem of sources or the practice of ancient philosophical commentary, and also explore the development of various disciplines such as mathematics, logic, grammar, physics, and medicine, in their relation to ancient philosophy. Each paper informs the reader of the current state of debate concerning its topic, and pushes the dialogue further by expressing the views of its author. The volume presents a lively introduction, bibliography, chronology, maps, and an index, making this book an excellent resource for students and scholars alike. Non-specialists will find this Companion accessible and rewarding, while specialists will be inspired to revisit controversial questions anew.