TATIAN [Tatian] , 2d cent., Christian apologist. Probably born in Syria, he was a pupil of Justin Martyr . After his master's death, he left Christianity, becoming an Encratitic Gnostic—i.e., he regarded all matter as evil and denied the salvation of Adam. While a Christian, he wrote Oratio ad Graecos [address to the Greeks] (152-55), a defense of Christianity bolstered by a bitter attack on Greek arts, philosophers, and institutions, and the Diatessaron, a harmony of the four Gospels that was long the only life of Jesus available in Syria.
Author not available, TATIAN., The Columbia Encyclopedia, Sixth Edition 2006
The Columbia Encyclopedia, Sixth Edition. Copyright 2006 Columbia University Press