John Garvey is president of the Catholic University of America. He was dean of Boston College Law school from 1999-2010 and is author or coauthor of many award-winning books. Garvey earned his J.D. in 1974 at Harvard Law School, where he served as treasurer of the Harvard Law Review. He received an A.B. in 1970 from the University of Notre Dame.

John J. Dietzen is a retired Catholic pastor whose career has spanned 40 years in pastoral ministry, marriage and family education, and journalism. His weekly question and answer column is syndicated nationally in nearly 40 Catholic newspapers, and he also writes a weekly column for the Peoria Journal-Star. He teaches philosophy and conducts parish missions and retreats for men, women, and couples and serves as episcopal vicar for retired priests in his diocese. He lives in Peoria, Illinois.

John Markey, OP, is a Professor of Theology and the Director of the PhD program in Spirituality at Oblate School of Theology in San Antonio, Texas. He graduated from the University of Notre Dame in 1984, then earned an M.A. in Theology there two years later. He entered the Dominican Order in 1987 and was ordained a priest in 1993. He received his M.Div from the Dominican School of Philosophy and Theology in 1991 and his PhD in Philosophy and Theology from the Graduate Theological Union in Berkeley, California in...

Laurence Freeman OSB is a monk of the Olivetan Benedictine Congregation of Monte Oliveto Maggiore and Director of The World Community for Christian Meditation. Freeman was born in England in 1951 where he was educated by the Benedictines and studied English Literature at Oxford University. In the monastery his spiritual teacher was John Main with whom he studied and whom he helped in the establishment of the first Christian Meditation Centre in London. In 1977, he went with John Main at the invitation of the Archbishop of Montreal to establish...

The Rev. Dr. John Charlton Polkinghorne, KBE, FRS is an English theoretical physicist, theologian, writer, and Anglican priest. He was professor of mathematical physics at the University of Cambridge from 1968 to 1979, when he resigned his chair to study for the priesthood. He became an ordained Anglican priest in 1982. He served as the president of Queens' College, Cambridge from 1988 until 1996. Polkinghorne is the author of five books on physics, and 26 on the relationship between science and religion. He was knighted in 1997 and in 2002...

John Raphael Quinn is the Archbishop Emeritus of the Archdiocese of San Francisco; he served as the archdiocese's sixth archbishop from 1977 to 1995. He also served as Archbishop of Oklahoma City and as the president of the United States Catholic Conference and National Conference of Catholic Bishops. He is the author of Reform of the Papacy: The Costly Call to Christian Unity (Crossroad Publishing) and Ever Ancient, Ever New: Structures of Communion in the Church.

Fr. John R. Waiss resides in Los Angeles, California where he has done extensive work with young couples.