Iamblichus was a Syrian Arab Neoplatonic philosopher who determined a direction later taken by Neoplatonism. Iamblichus was also the biographer of the Greek mystic, philosopher, and mathematician Pythagoras. In addition to his philosophical contributions, his Protrepticus is important for the study of the sophists because it preserved about ten pages of an otherwise unknown sophist, whose name is not mentioned and who is currently known as "Anonymus Iamblichi". 240 – 320; died at about 80. Alive at the same time as Constantine the Great, Sylvester I, Diophantus of Alexandria, Cyprian, and Nagarjuna. Wiki link