This book discusses the principal fragments of the early Greek thinkers like Anaximander, Heraclitus, Pythagoras, Parmenides and many others, who predate Plato and Aristotle. The author contends that pre-Platonic Greek philosophy is not to be looked at as a matter of mere historical interest. Although their work survives only in fragments, they have been the subject of study and reflection by the whole western philosophical tradition. Therefore the second edition of Ancient Greek Philosophy: Thales to Socrates covers the gamut of western thought from the pre-Socratic to the Socratic in order to provide us with an in-depth introduction to the whole of classical Greek philosophy.