The De Doctrina Christiana ("On Christian Teaching") is one of Augustine's most important works on the classical tradition. Undertaken at the same time as the Confessions, it sheds light on the development of Augustine's thought, especially in the areas of ethics, hermeneutics, and sign-theory. This completely new translation gives a close but updated representation of Augustine's thought and expression, while a succinct introduction and select bibliography present the insights of recent research.