Eulogius, who had been a monk of Antioch, was more conspicuous for subtilty than eloquence. He proves that the enemies of the faith, the Gaianites and Theodosians, ought not to be reconciled; that the same proposition may be orthodox in the mouth of St. Cyril, heretical in that of Severus; that the opposite assertions of St. Leo are equally true, etc. His writings are no longer extant except in the Extracts of Photius, who had perused them with care and satisfaction, ccviii. ccxxv. ccxxvi. ccxxvii. ccxxx. cclxxx.