Aristotle Commentaries

Exposure to the works of Aristotle was intellectually stimulating for St. Thomas. Throughout St. Thomas’s life this exposure was continually expanding as the works of the Greek philosopher were translated into Latin. St. Thomas found Aristotle’s philosophy helpful in making key distinctions and in providing a foundation for his own explorations. Not only did St. Thomas quote Aristotle extensively in his works, he also wrote commentaries on many of Aristotle’s greatest works. In exploring Aristotle’s works, St. Thomas Aquinas provides a Catholic insight into Aristotle’s philosophy while letting that philosophy form his understanding of the world.


In these commentaries, which include the original texts of Aristotle in Greek, Latin, and English, the best of Greek and scholastic philosophy is presented.

Vol. 46: On Interpretation and the Posterior Analytics
STATUS:    Copyright Research
TRANSLATOR:    Jean R. Oesterle and Fabian R. Larcher
SOURCE TEXTS:    Leonine 1989 edition
This first volume of St. Thomas’s Commentaries on Aristotle contains the commentaries on the On Interpretation and the Posterior Analytics. On Interpretation considers the relationship between language and logic, while the Posterior Analytics is Aristotle’s famous treatise on logic. St. Thomas brings his insight to help the reader understand the fullness of Aristotle’s thought.
Vol. 47: Physics
STATUS:    Editing for Publication
TRANSLATOR:    Richard J. Blackwell and Richrad J. Sparth and W.Edmund Thirlkel and Pierre H. Conway
SOURCE TEXTS:    Leonine 1884 edition
This volume is devoted St. Thomas’s commentary on the Physics. In the Physics, Aristotle delves into what makes things what they are. In commenting on this fundamental text of Aristotelian philosophy, St. Thomas takes Aristotle’s thoughts and deepens them.
Vol. 48: On Heaven and Earth, On Generation and Corruption and Meteorology
STATUS:    Copyright Research
TRANSLATOR:    Fabian R. Larcher and Pierre H. Conway
SOURCE TEXTS:    Leonine 1886 edition
This volume contains the commentaries on three of Aristotle’s works, those on his On Heaven and Earth, On Generation and Corruption and Meteorology. On Heaven and Earth was influential in forming St. Thomas’s view of the celestial bodies while On Generation and Corruption presents Aristotle’s thought on the coming to be and passing away of substances. Finally, the work Meteorology treats of the material explanations of the physical world.
Vol. 49: On the Soul and On Sensing and Sensation
STATUS:    Editing for Publication
TRANSLATOR:    Kenelm Foster and Sylvester Humphries and Kevin White
SOURCE TEXTS:    Leonine 1984 edition
Included in this volume of the Commentaries on Aristotle are the commentaries on Aristotle’s On the Soul and On Sensing and Sensation. By analyzing On the Soul, St. Thomas shows the value of Aristotle’s understanding of the soul as he enriches and expounds on it. St. Thomas probes Aristotle’s understanding of the senses in On Sensing and Sensation.
Vol. 50: Metaphysics I
STATUS:    Editing for Publication
TRANSLATOR:    John P. Rowan
SOURCE TEXTS:    Marietti 1971 edition
Foundational in its consideration of being and the transcendentals, the Metaphysics of Aristotle is a dense and difficult work on its own. This volume contains the first half of St. Thomas’s commentary on the Metaphysics, beginning with discussing the views of Aristotle’s predecessors and moving towards a discussion of being.
Vol. 51: Metaphysics II
STATUS:    Editing for Publication
TRANSLATOR:    John P. Rowan
SOURCE TEXTS:    Marietti 1971 edition
In the second half of the commentary on the Metaphysics St. Thomas begins by showing how previous philosophers did not explore being itself, while Aristotle does. He next discusses Aristotle’s treatment of potency and act as well as the comparison between potency and act. The commentary concludes as St. Thomas analyzes Aristotle’s consideration of universal goodness.
Vol. 52: Nicomachean Ethics
STATUS:    Copyright Research
TRANSLATOR:    C.I Litzinger
SOURCE TEXTS:    Leonine 1969 edition
The Nicomachean Ethics contains Aristotle’s deepest thoughts on how one ought to live. Aristotle speaks of moderation, virtues and the need to pursue an intellectual life. St. Thomas expounds upon the merit of Aristotle’s life, showing how this understanding can help the Christian to live a good life, while recognizing that grace makes the good life easier to live.
Vol. 53: Tabula Libri Ethicorum and Politics
STATUS:    Translating
TRANSLATOR:¬†¬†¬†¬†Ernest L. Fortin and Peter D. O’Neill, Sean Pilcher
SOURCE TEXTS:    Leonine 1992 edition, Marietti 1950 edition, E.J. Brill 1965 edition
The final volume in our set of Commentaries on Aristotle includes the Tabula Libri Ethicorum and the commentary on Politics. The Tabula Libri Ethicorum is a table drawn up by St. Thomas that organizes the principal themes in the Nicomachean Ethics and Albert the Great’s commentary on the Nicomachean Ethics. In the incomplete commentary on Politics St. Thomas examines Aristotle’s political thought.