Anaxagoras

Anaxagoras (500–428 B.C.), Greek philosopher of the Ionian school, resident of Athens, who taught that the elements were infinite in number and that everything contained a portion of every other thing. He also postulated a basic moving force of the universe, Nous or Mind. He was the teacher of Pericles, Euripides, and reputedly, of Socrates.

See also: Socrates.