The philosophers of the Hellenistic schools in ancient Greece and Rome (Epicureans, Stoics, Sceptics, Academics, Cyrenaics) made important contributions to the philosophy of mind and the philosophy of psychology. This volume, which contains the proceedings of the Fifth Symposium Hellenisticum, describes and analyses their contributions on issues such as: the nature of perception, imagination and belief; the nature of the passions and their role in action; the relationship between mind and body; freedom and determinism; the role of pleasure as a goal; the effects of poetry on belief and passion. Written with a high level of historical and philosophical scholarship, the essays are intended both for classicists and for specialists interested in the philosophy of mind.