Works on Doctrine.

        Hippolytus did not neglect the field of Christian doctrine. Perhaps the earliest of his works was that On Christ and Antichrist, written about A.D. 200. It was written in reply to certain topics (“heads”) or questions raised by his friend Theophilus about the signs of the end. Hippolytus did not regard Rome as the kingdom of Antichrist but as the fourth of the kingdoms described in the Book of Daniel. In it he made some use of the great work of his old master Irenaeus. It is often mentioned in his Daniel commentary, written in 202-4, and is extant in full in Greek.

        A work On the Resurrection, addressed to the empress Julia Mamaea, was composed sometime during the reign of her son Alexander Severus, A.D. 222-35. Only a few Greek and Syriac fragments remain of it.

        A work On the Universe, against the Greeks and Plato, is mentioned by medieval writers (Photius, Philoponus) as the work of Josephus or Gaius but was pretty certainly written by Hippolytus, for he mentions it as his in Refutation x. 28, so that it was evidently written before 225. It was in two books, but only a few Greek fragments remain. (See W. J. Malley in Journal of Theological Studies, XVI [ 1965], 13-25.).

        We have also the titles of two other works — the Address to Severina and On Good and the Source of Evil — but both are lost, and there seem to be no identifiable fragments, so that their dates cannot be determined.