This is the story of his years among the Manicheans. It includes the account of his teaching at Tagaste, his taking a mistress, the attractions of astrology, the poignant loss of a friend which leads to a searching analysis of grief and transience. He reports on his first book, De pulchro et apto, and his introduction to Aristotle's Categories and other books of philosophy and theology, which he mastered with great ease and little profit.
1. During this period of nine years, from my nineteenth year to my twenty-eighth, I went astray and led others astray. I was deceived and deceived others, in varied lustful projects--sometimes publicly, by the teaching of what men style "the liberal arts"; sometimes secretly, under the false guise of religion. In the one, I was proud of myself; in the other, superstitious; in all, vain! In my public life I was striving after the emptiness of popular fame, going so far as to seek theatrical applause, entering poetic contests, striving for the straw garlands and the vanity of theatricals and intemperate desires. In my private life I was seeking to be purged from these corruptions of ours by carrying food to those who were called "elect" and "holy," which, in the laboratory of their stomachs, they should make into angels and gods for us, and by them we might be set free. These projects I followed out and practiced with my friends, who were both deceived with me and by me. Let the proud laugh at me, and those who have not yet been savingly cast down and stricken by thee, O my God. Nevertheless, I would confess to thee my shame to thy glory. Bear with me, I beseech thee, and give me the grace to retrace in my present memory the devious ways of my past errors and thus be able to "offer to thee the sacrifice of thanksgiving." For what am I to myself without thee but a guide to my own downfall? Or what am I, even at the best, but one suckled on thy milk and feeding on thee, O Food that never perishes? What indeed is any man, seeing that he is but a man? Therefore, let the strong and the mighty laugh at us, but let us who are "poor and needy"confess to thee.