
Philosophy claims ancient barbarian origins alongside Greek traditions.
Competing accounts place the birth of philosophical inquiry among Persian Magi, Egyptian priests of Vulcan, and Celtic Druids rather than purely within Greece. Egyptian records measure philosophy's antiquity across tens of thousands of years and hundreds of solar eclipses. Diogenes divides Greek thought into two primary streams: the Ionic line stemming from Anaximander and the Italian line established by Pythagoras.
BOOK I. → INTRODUCTION.

