Man is the measure of all things, proclaimed Protagoras of Abdera, encapsulating the essence of early Greek philosophy. In the vibrant milieu of the sixth century B.C., Greek thinkers laid the groundwork for the western philosophical tradition with their bold inquiries into the nature of existence. From the pioneering ideas of Thales, Anaximander, and Anaximenes in the Greek colonies of western Asia Minor, who sought to explain the physical universe through natural laws, to Pythagoras in Croton, who illuminated the interconnectedness of geometry and music, these thinkers shaped profound insights into the fabric of reality. Alfred Benn, the esteemed Hellenic scholar, takes us through the captivating lives and teachings of Heraclitus, Parmenides, the Sophists, and ultimately, the poignant story of Socrates‚his trial and death‚offering a concise yet enlightening exploration of early Greek thought. (Summary by Pamela Nagami, M.D.)