The Morality of the Exterior ACT: In the Writings of St. Thomas Aquinas, Paperback

This text addressed how we know what we are doing morally. It includes a discussion by St. Thomas and other moralists regarding the nature of the object of the moral act, the distinction between a natural and moral species of an act and how one goes from the natural species of an act to the moral species of the act as conceived by reason. The text also includes a detailed discussion of circumstances as well as the fundamental option.