Thomas Aquinas

Thomas de Vio Cajetan

When Leo XII promulgated Aeterni Patris in 1879, he stipulated that the “Leonine,” or official, edition of the Summa should always be printed in conjunction with Cajetan’s Commentary. For five hundred years they were studied together. Generations were trained by reading through the Summa article by article with Cajetan’s commentaries in hand. Early printed editions of the Summa typically included them in a Talmudic arrangement, as marginal text running around each article by Aquinas. This edition imitates that example. Recently, serious thinkers of all denominations – and none – have found new reasons to be interested in St. Thomas. His text is deceptively simple, yet important issues are handled in every article, sometimes below the surface. Cajetan extracts these hidden issues, and explains and elaborates on them with remarkable affinity to modern analytical philosophy. Part of that affinity lies in the use of modal logic, a tool whose importance was overlooked between the Renaissance and the twentieth century. The time is ripe for an analytically-inspired translation of Thomas: hence this volume. Never until now has Cajetan’s Commentary been put into English in its entirety. William Marshner’s translation is consistent with fidelity to the technical force of the original. The translator’s footnotes acknowledge what empirical science has made obsolete in the work of St. Thomas, and also make clear how much today’s science would have saved Thomas useless labor. This volume will, for the first time, make Cajetan’s help available to the modern reader.

With the Commentary of Cardinal Cajetan

Summa Theologiae, Prima Pars: Volume 1, The One God, QQ 1-26

This book is an introduction to three questions on love according to St. Thomas Aquinas (Summa Theologiae I-II, qq. 26-28). These three questions reflect on the nature of love (q. 26), the causes of love (q. 27), and the effects of love (q. 28). It is thus an introduction to the entire phenomenon of love, both as a bodily passion and an act of the will. The purpose is to present the Thomistic and broadly scholastic account of human and divine love from a philosophical and theological perspective. It aims to be a theological and philosophical study of the topic, useful both for a graduate/professional audience, as part of an undergraduate or graduate course, and perhaps for the educated reader. The thesis of the book is that, contrary to contemporary conceptions, not all loves are created equal. Some loves perfect us and some loves corrupt us. The worth of a love depends on its object and end. St. Thomas thus presents an objective and teleological account of human and divine love that is of philosophical and theological interest. The method is broadly exegetical, presenting a careful reading of the text and supplying the philosophical and theological background which the text of Aquinas assumes. The scope of the work is limited to three questions (ST I-II, qq. 26-28). References to interpretative disputes of Aquinas and references to further resources in the secondary literature will be mostly limited to the footnotes, making the body of the text accessible to more readers.

Thomas de Vio Cajetan

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