Origen of Alexandria (185-254AD) was a zealous and well educated Christian youth who became an instructor of Christian converts during the persecution that killed his father. He was a leading Biblical scholar and Spiritual writer. Unfortunately, while attempting to refute Gnosticsm, his theology was influenced by the Gnostic presupposition that the world was evil.
http://archive.org/download/OrthodoxChurchHistory/6Origen2006A.mp3