The ancient Greeks were not only the founders of western philosophy, but the actual term "philosophy" is Greek in origin, most likely dating back to the late sixth century BC. Socrates, Plato, Aristotle, Pythagoras, Euclid, and Thales are but a few of the better-known philosophers of ancient Greece. During the amazingly fertile period running from roughly the middle of the first millennium BC to the middle of the first millennium AD, the world saw the rise of science, numerous schools of thought, and—many believe—the birth of modern civilization. The A to Z of Ancient Greek Philosophy presents the history of Greek philosophy and the philosophers who made it famous. This is accomplished through a chronology, an introduction, a glossary, a bibliography, and hundreds of cross-referenced dictionary entries on important philosophers, concepts, issues, and events.