Anaxagoras

(c. 500 - c. 428 BCE)

Ancient Greek Natural philosopher from Clazomenae of the Pluralist school.

Anaxagoras posited nous (Mind) as the (efficient) causal force in the kosmos which is responsible for bringing together the infinite number of spermata (seeds) from which all things are composed. Decomposition is caused by the process of cosmic circulation (vortex).

Read more about Anaxagoras.

Also see the Stanford Encyclopedia entry on Anaxagoras for a more detailed discussion.