We are now witnessing in the United States a revival of orthodox Catholic theological education, rooted explicitly in the theology of Saint Thomas Aquinas, as countless popes and Church documents recommend.

Surprisingly, however, there does not yet exist an affordable, high-quality edition of the saint’s greatest systematic work of dogmatic and moral theology, the Summa Theologiae. In particular, it is difficult and expensive to acquire an edition in the original language in which St. Thomas wrote—the Church’s mother tongue of Latin—and for many who are either just learning to read Latin or who wish to glance occasionally at an English translation while working with the original, there has never been an adequate and convenient bilingual edition of the Summa.

The Aquinas Institute is therefore proud to announce the publication of the Summa Theologiae in a bilingual edition with Latin and English in parallel columns.

• Complete text in Latin and in English
• English text based on the translation of the Fathers of the English Dominican Province, edited and corrected by the Institute’s faculty and staff
• Hardcover, quality binding in an 8 volume set
• Affordable price

The eight-volume set does not include the Supplementum at this time. The two volumes of the Supplementem may be ordered separately. At the same time, the Aquinas Institute has completed a translation of the fourth book of the Commentary on the Sentences.

Commentary on the Gospel of Matthew

St. Thomas's Commentary on Matthew will guide today's reader in the serious study of the first of the Gospels. The Commentary on Matthew demonstrates a spectacular familiarity with Scripture ranging across both Testaments, a knowledge of the views of Eastern and Western Fathers, and the virtue of discerning the intelligible order in the text, with a view to the author's proximate and ultimate aims. While St. Thomas's commentary cannot substitute for the modern advances in narrative analysis of Matthew, his dogmatic and moral discussions are timeless.

The Commentary on Matthew has a complex textual history, as parts of the original reportatio (a text transcribed by a student listening to the lectures) were either missing or replaced by other content in different versions. Certain previous editions contain defective text. Fortunately, manuscript discoveries in the twentieth century together with textual research on the part of the Leonine Commission have made possible the preparation of an accurate Latin text of the commentary—and this is the reliable text that The Aquinas Institute is publishing.
• English translation by Dr. Jeremy Holmes and Dr. Beth Mortensen

Commentary on the Gospel of John

The Commentary on John shows the Angelic Doctor at his most profound. He illuminates the doctrine of the text by weaving in Scriptural references, by citing the Church Fathers' interpretations, and by applying his probing mind to unraveling difficulties in the text, all the while leading the reader ever deeper into the ineffable mysteries of the Trinity and the Incarnation. The Commentary on John displays a brilliant integration of philosophical reasoning, biblical wisdom, patristic witness, and theological method.

The acclaimed biographer of Saint Thomas, Fr. Jean-Pierre Torrell, O.P., comments: "It would be a bit foolish to try drawing up a ranking of Thomas's best scriptural commentaries, but it is certain that we could classify this [Commentary on John] as among the most fully finished and most profound that he has left us." In it, says Fr. Torrell, "Thomas reveals himself . . . as one of the contemplatives of whom St. John is the model." Until now, this important work’s availability was limited. The Aquinas Institute is pleased to present the entire Commentary on John in a bilingual Latin-English hardcover edition of two volumes.
• English text based on the translation of Fr. Larcher, edited by the collaborators of The Aquinas Institute