Aquinas Basic Works Author:Thomas Aquinas Includes an Introduction by the editors, On the Principles of Nature, On Being and Essence, The Treatise on the Divine Nature (Summa Theologiae I.1-13), The Treatise on Human Nature (Summa Theologiae I.75-86), The Treatise on Happiness (Summa Theologiae I-II.1-5), The Treatise on Human Acts (Summa Theologiae I-II.6-21), Disputed Questions on Vir... more »tue, The Treatise on Law (Summa Theologiae I-II.90-97).« less