The city fathers of Athens banned Araxagoras's teachings at the outbreak of the Peloponnesian War.
Anaxagoras was a Pre-Socratic Greek philosopher. Born in Clazomenae at a time when Asia Minor was under the control of the Persian Empire, Anaxagoras came to Athens.
Anaxagoras described the world as a combination of primary imperishable ingredients, where material variation was never caused by an absolute presence of a particular ingredient, but rather by its relative preponderance over the other ingredients.