Agape and Eros (Part I: A Study of the Christian Idea of Love; Part II The History of the Christian Idea of Love)

The Problem of Love in the Middle Ages: A Historical Contribution (Marquette Studies in Philosophy)

Agape: An Ethical Analysis (Yale Publications in Religion)

Faith, Hope, Love

Richard of St. Victor: The Book of the Patriarchs, The Mystical Ark, Book Three of the Trinity (Classics of Western Spirituality)