Those interested in the concept of ecstasy would be forgiven for assuming that a sober scholastic like St. Thomas Aquinas had little place for the idea. Yet in this groundbreaking study, sure to refine our understanding of the Angelic Doctor, Peter Kwasniewski shows that St. Thomas contemplates the nature of ecstasy at key stages in the development of his thought and that it plays a crucial role in his doctrine of love.

After a stimulating study of treatments of ecstasy in ancient philosophy, Sacred Scripture, and the medieval tradition prior to Aquinas, Kwasniewski finds that he can be seen as breathing new life into the concept. While his contemporary, St. Bonaventure, for example, tended to restrict ecstasy to the soul’s union with God, St. Thomas admitted the place of ecstasy in a variety of human activities.

Furthermore, St. Thomas recognized that all love involves ecstatic transcendence, whether it be the creature’s self-oblation to the Creator, the reverence of an inferior for a superior, a superior’s generosity toward an inferior, or the mutual affection and help of equals joined in friendship. Love of persons for their own sake generates an ecstatic love in which the self is borne as a gift to another subject by sharing a common life aspiring to common goods. Kwasniewski also examines Aquinas on the question of whether or not God experiences ecstasy, and if so, in what ways.

The Ecstasy of Love in the Thought of Thomas Aquinas makes a significant contribution to our understanding of the doctrine of love and to the interpretation of the thought of St. Thomas Aquinas. It is more than an analysis of key texts; it is an illuminating guide to the grammar of ecstasy.


Dr. Peter Kwasniewski, a Thomistic theologian, liturgical scholar, and choral composer, is a graduate of Thomas Aquinas College and The Catholic University of America. He has taught for the International Theological Institute in Austria, the Franciscan University of Steubenville’s Austria Program, and Wyoming Catholic College, which he helped establish in 2006, and where he taught theology, philosophy, music, and art history until 2018; he is presently a full-time writer, editor, and public speaker. Kwasniewski has authored or edited eleven previous books.


“Studies of medieval theories of love have too often neglected or denigrated the ecstatic elements of love’s desire. This book offers an important corrective. It is quite simply the best extended treatment of Thomas Aquinas’s understanding of ecstasy.”

Michael Sherwin, O.P.
University of Fribourg


“Dr. Kwasniewski has given us a very thorough, detailed analysis of the concept of ecstasy, primarily in the writings of St. Thomas Aquinas, but also in the spiritual, theological and philosophical tradition upon which he was drawing. The book is chock-full of texts from St. Thomas’s corpus, all meticulously translated by Dr. Kwasniewski, as well as useful texts from and references to other authors contemporary, medieval, and ancient.”

Kevin L. Flannery, S.J.
The Pontifical Gregorian University
Creighton University


“St. Thomas Aquinas’s doctrine of love has been carefully examined by several scholars over the past century, but a crucial aspect of the doctrine has generally been neglected, namely, its account of the effect of love that St. Thomas calls extasis, a Latin term modeled on a Greek word that connotes ‘standing outside oneself.’ Love, in St. Thomas’s view, causes one who loves to be carried ‘outside himself’ towards, and into the presence of, his beloved. The present work rectifies the neglect of extasis by undertaking a thorough examination of the theme in Aquinas’s writings, and in so doing, it reveals the surprising importance of extasis as a key to understanding the Thomistic doctrine of love.”

Kevin White
The Catholic University of America


“Kwasniewski’s study opens a seam in Thomas’s thought that has been neglected, if not wholly forgotten. It is not only a contribution to appreciating the prayerful and mystical aspects in Aquinas but offers a hugely important avenue into his ethics and anthropology. In detail, and with careful scholarship, the author shows that interior to Thomas’s logic, distinctions, and disputations is a lustrous warmth, the cosmos lovingly responsive to divine care.”

Graham McAleer
Loyola University Maryland


“Peter Kwasniewski’s book on ecstasy in Aquinas is one of those rare, profound, scholarly works—like those by Jean Leclercq or Etienne Gilson—which is also written so beautifully, with so much love and clarity, and with so much wisdom, that you could take it to the chapel with you. I think it is exactly the sort of intellectual labor the medieval Dominicans had in mind when they said, ‘First the bow is bent in study.’ If you want to avoid flaccid prayer, feed the mind. If you want to love God, labor to learn about him and his works.”

Jason M. Baxter
Wyoming Catholic College

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The Ecstasy of Love in the Thought of Thomas Aquinas