Lactantius, Lucius Caecilius Firmiānus (or perhaps Lactantius, Lucius Caelius Firmiānus). (c. AD 245–c.325), Latin author and Christian apologist, a native of North Africa, pupil of the African rhetorician Arnobius. His fame was such that he was summoned by the (pagan) Roman emperor Diocletian (284–305) to teach Latin rhetoric at Nicomedia (a Greek city in Bithynia and Diocletian's eastern capital). It is uncertain when he was converted to Christianity, but at the beginning of the Great Persecution of the Christians (303–313) he seems to have been without employment, probably on that account. In his old age he was summoned to Gaul by the emperor Constantine the Great to become tutor (c.317) to the latter's son Crispus. Only his Christian works survive. Chief among these are De opificio Dei (303–4) (‘on God's handiwork’), an attempt to prove the existence of divine providence based on the evidence of design in the human body; De ira Dei (‘on the wrath of God’), arguing against some philosophers that anger is a necessary part of the character of God, who must deliver just punishment against evil-doers; and the Institūtiōnes dīvīnae (‘divine institutions’) in seven books, written between 305 and 313, of which he later produced an epitome. This last is a work of wide scope, a defence of Christian doctrine as a harmonious and logical system; it is addressed to cultivated pagan readers and appeals not to the scriptures but to the testimony of pagan writers themselves. The first three books are a criticism of polytheism and of Roman philosophers; book 4 turns from criticism to constructive argument, demonstrating that the Christian faith alone provides true unity of philosophy and religion; this is followed by an exposition of the faith, the Christian idea of justice and morality (in book 5), the manner in which homage ought to be paid to God (book 6), and an investigation of the chief good, the purpose of creation, and the immortality of the soul (book 7), concluding with an exhortation to the Christian life. Lactantius has been criticized by Christians for unorthodox beliefs, but he has a grasp of what seem to be the essential principles of the Christian religion. He writes in an oratorical Ciceronian prose (he has been called the Christian Cicero), in a persuasive rather than a polemical tone, seeking to justify faith by reason rather than by authority. An exception to this manner is found in his De mortibus persecutorum (‘on the deaths of the persecutors’), written in Gaul c.318, shortly after the triumph of Christianity (see CONSTANTINE), a blood-curdling description of the successive fates of the emperors who persecuted Christians, particularly in Lactantius' time. Being written by an eyewitness the book has considerable interest; it includes a description of Constantine's vision before the battle of the Milvian Bridge. There also survives a poem generally believed to be by Lactantius, the Phoenix; it relates the well-known story of the mythical bird and treats it as a symbol of the resurrection of Christ.





