Valentinianism
"Valentinianism" is the name for the school of gnostic philosophy tracing back to Valentinus. It was one of the major gnostic movements, having widespread following throughout the Roman Empire and provoking voluminous writings by Christian heresiologists. Notable Valentinians included Heracleon, Ptolemy, Florinus, Marcus and Axionicus.
Valentinus professed to have derived his ideas from Theodas or Theudas, a disciple of St. Paul. Valentinus drew freely on some books of the New Testament. Unlike a great number of other gnostic systems, which are expressly dualist, Valentinus developed a system that was more monistic, albeit expressed in dualistic terms.
Read more about this topic: Valentinus (Gnostic)