Fr. Dennis J. Billy, C.Ss.R., is Professor Emeritus of the history of moral theology and Christian spirituality at the Alphonsian Academy of the Pontifical Lateran University in Rome and currently serves as The Robert F. Leavitt Distinguished Service Chair in Theology at St. Mary's Seminary & University in Baltimore. An American Redemptorist of the Baltimore Province, Fr. Billy has advanced degrees from Harvard University, the Pontifical University of St. Thomas (Angelicum), and the Graduate Theological Foundation. The author of numerous books and articles on a variety of religious topics, he is also active in his order's retreat apostolate and in the ministry of spiritual direction.