This seminar will focus on the writings of Augustine, Aquinas, and Kant that have been and continue to be seminal texts for the contemporary discipline of moral theology/theological ethics. The goal will be to understand their conceptions of human happiness, the nature of morality, the means (actions, virtues, sin, law, grace, friendship) by which one pursues happiness or lives morally. We will also attend to their understanding of the individual and political society. While we will focus on primary sources, students will also be introduced to key interpretations of Augustine, Aquinas, and Kant by contemporary moral theologians.