Abstract

Throughout the Confessions, Augustine repeatedly complains about heresy with a special focus on the heresy he once belonged to, Manicheanism. To those of us who live in a culture in which respectable people rarely, if ever, care about religious orthodoxy to such a degree, these complaints seem rather bizarre. Despite this initial appearance, Augustine presents in the Confessions several plausible reasons for thinking heresy is sinful and, therefore, detrimental to a person’s sanctity and ultimate salvation. In this paper, I argue that Augustine considers heresy sinful because it involves as many as three kinds of idolatry: loving a lie/false conception of God instead of the true God, loving one’s own beliefs more than the Truth, which is God, and loving the worldly praise one receives from developing novel opinions more than God.