Neo-platonism and eastern mystical creed.
Plotinus (205-270) AD was the founder of this school. Plotinus philosophy was a way to union with God through moral purification and intellectual enlightment. It deeply influenced the intellectual world of Christian thinkers.
Athenian school of Neo-platonism was distinguished by its passionate paganism and by its taste for elaborate metaphysical speculation.
Proclus of Neo-platonism school of Athens is the principal source through which Neop-platonic ideas diffused to the Byzantine Islamic World and Medieval Latin West.
Proclus influenced Christian thought through Dionisus of Aeropagite.