This unparalleled study of early Eastern and Western philosophy challenges every existing belief about the foundations of Western civilization. Spanning thirty years of intensive research, this book proves what many scholars could not explain: that today’s Western world must be considered the product of both Greek and Indian thought—Western and Eastern philosophies. Thomas McEvilley explores how trade, imperialism, and migration currents allowed cultural philosophies to intermingle freely throughout India, Egypt, Greece, and the ancient Near East. This groundbreaking reference will stir relentless debate among philosophers, art historians, and students.