Saint Augustine was born to a Catholic mother and a pagan father on November 13, 354, at Tagasta, near Algiers. He studied Latin literature and later taught rhetoric in Rome and Milan. He originally joined the Manicheans, a religious sect, but grew unhappy with some of their philosophies. He soon turned to Christianity and was baptized in 386. One of Augustine's major goals was a single, unified church. He was ordained a priest in 391 and appointed Bishop of Hippo, in Roman Africa, in 396, His writings and arguments with other sects include the Donatists and the Pelagians. On the Trinity, The City of God, and On Nature and Grace are some of his important writings. Confessions, which is considered his masterpiece, is an autobiographical work that recounts his restless youth and details the spiritual experiences that led him to Christianity. Many of Augustine's ideas, such as those concerning sin and predestination, became integral to the doctrines of the Roman Catholic Church. Augustine died on August 28, 430.