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

This is the doctoral dissertation of Fr. Ripperger which covers the distinction in the writings of St. Thomas between object of the moral act, its natural species and its moral species. It covers how, in the mind in St. Thomas, one derives the moral content of the moral species and how one goes from the natural species of the moral act to the moral species which one chooses.