Augustine of Hippo

Saint Augustine of Hippo (354-430) was one of the most influential figures of ancient Christianity. Born in Thagaste, Numidia (present-day Algeria), he was initially a brilliant rhetorician and Manichaean philosopher before his dramatic conversion to Christianity in 386, influenced by his mother Monica and Bishop Ambrose of Milan. Becoming a priest and then Bishop of Hippo in 395, he dedicated the rest of his life to defending the Christian faith against various heresies (Manichaeism, Donatism, Pelagianism). His major works, notably the "Confessions" (an autobiographical account of his conversion) and "The City of God" (a philosophy of history and a defense of Christianity), profoundly shaped theology, philosophy, and Western thought. He is recognized as one of the four great Doctors of the Church in the West, and his influence continues to this day.