Anaximander

This article is about the Pre-Socratic philosopher. For other uses, see Anaximander (disambiguation).

Anaximander (fl. early 6th c. BC) was a Greek philosopher who held that the primary principal or cause of the world consisted of a non-material, boundless entity which underlay the world and its various changes. He wrote the first surviving fragments of Western philosophy and is also known for his accomplishments, both of a practical nature and in the realm of philosophical speculation, in what we would today call the fields of geography, biology, and astronomy.