Bp. of Tarsus from 378. He had combated Arianism in Antioch and opposed Julian the Apostate. In 381 he was named by Theodosius I one of the bishops communion with whom was a test of orthodoxy. He followed the Antiochene tradition in theology, insisting on literal and historical exegesis and, against Apollinarius, on the complete humanity of Christ. Apart from a commentary on the Psalms, only fragments of his writings survive.