(185- 254 C.E.) Born in Alexandria. He studied Greek philosophy with Ammonius, and others. He became a Christian under Clement. Some of his surviving work is considered somewhat Gnostic in its nature according to later western Christian leaders. Origen was declared heretical on the basis of his beliefs in the pre-existence of souls and his beliefs about apokatastasis. In 553 A.D the Chalcedonians anathematized him.http://www.iep.utm.edu/o/origen.htm http://www.earlychristianwritings.com/origen.html