Robert H. Hopcke is a licensed marriage and family therapist with degrees in both pastoral and clinical counseling. He is the author of numerous books, including There Are No Accidents and Living the Mysteries: The Spiritual Power of the Rosary in the Lives of Contemporary People.

Paul A. Schwartz holds a doctorate in theology from the Graduate Theological Union, Berkeley, California, where he was Project Director of the Center for the Study of New Religious Movements. He has served on the faculty of San Francisco State University and of the California Institute of Integral Studies.