With over 500 biographies of famous and influential philosophers and a chronology of philosophical events stretching from 10,000 BC to the present day, this dictionary covers every aspect of philosophy from Aristotle to Zen. With clear and concise definitions, it provides lively and accessible coverage of not only Western philosophical traditions, but also themes from Chinese, Indian, Islamic, and Jewish philosophy. This revised edition also includes web links which provide up-to-date and valuable extra information via the Dictionary of Philosophy companion website.