(160-230) Native of Carthage who joined literalist Christianity around 196, after becoming a lawyer in Rome. Before he became a Montanist in 207, he argued with Hippolytus against Gnosticism. However his work does not reflect a sound or advanced knowledge of any of the, Valentinian, or Sethian epistemologies. (See Tertullian"s, "Treatise of the Soul".) http://www.tertullian.org/