Proclus

d.446. Patriarch of Constantinople. Formerly secretary to and ordained priest by Atticus, patriarch of Constantinople, he was consecrated archbishop of Cyzicus in 426, though opposition kept him out of his see. A renowned preacher, he delivered a sermon on the Theotokos (428) before Archbishop Nestorius, which appears to have precipitated the Nestorian* controversy, although his personal involvement was minor. In 434 he became patriarch of Constantinople, proved himself a moderate supporter of orthodoxy, and gained popularity by translating John Chrysostom's body there in 438. His writings are mostly sermons and letters, sometimes attacking Jewish beliefs and morals. His Tomus ad Armenios de fide, discussing Christ's two natures, while addressed to the Armenians, points to the errors of Theodore of Mopsuestia (he did not name him, however). A letter containing the famous formula “unum de Trinitate secundum carnem crucifixum,” which became the center of the Theopaschite* controversy, is mistakenly ascribed to him.