The Works of Thomas Aquinas


The Philosophy of Thomas Aquinas, a beginners course by Jonathan Dolhenty

II. The Works of Thomas Aquinas


The works of Thomas Aquinas may be conveniently divided into four groups:

  1. COMMENTARIES

on the Logic, Physics, Metaphysics, and Ethics of Aristotle;
on the Scriptures;
on Dionysius the Areopagite;
on the Four Books of Sentences of Peter Lombard.

  1. SUMMAE

The Summa contra Gentiles (A Summary Against the Gentiles), founded substantially on rational demonstration;
The Summa Theologica (A Summary of Theology), begun in 1265, and remaining incomplete because of Thomas’ early death.

  1. QUESTIONS

Quaestiones Disputatae (Disputed Questions): De Veritate (On Truth), De Anima (On the Soul), De Potentia (On Power), De Malo (On Evil), etc.;
Quaestiones Quodlibetales (Questions About Any Subject).

  1. OPUSCULA (selected examples)

De Ente et Essentia (On Being and Essence);
De Unitate Intellectus (On the Unity of the Intellect), written against the Averroists;
De Regimine Principum (On the Rule of Princes).


The late Dr. Jonathan Dolhenty was the Founder and President of The Center for Applied Philosophy and the Radical Academy, and is Honorary Philosophy Editor at The Moral Liberal. The Moral Liberal has adopted these projects beginning with a republishing and preserving of all of Dr. Dolhenty’s work. Copyright © 2014 The Moral Liberal.