During the mid-1980s, during a sabbatical from his work in Illinois, he lived and worked with Trappist monks in Kentucky's Gethsemani Abbey, and worked in India with Calcutta's Missionaries of Charity. He has also served on numerous national and international committees focusing on the subjects of spirituality and renewal in prayer, and served as a scholar-in-residence at the North American College in Rome. He is also a contributor to "The Spiritual Renewal of the American Priesthood," a publication of the National Conference of Catholic Bishops.