Hellmut Luetzner, MD, is a doctor who specializes in internal medicine with a focus on fasting. In 1975, he developed the fasting clinic in Germany, which he still heads today. He is the author of Successful Fasting: The Easy Way to Cleanse Your Body of Its Poisons.

Henri-Marie de Lubac, S.J. was a French Jesuit priest who became a cardinal of the Catholic church, and is considered to be one of the most influential theologians of the 20th century. His writings and doctrinal research played a key role in the shaping of the Second Vatican Council.

Henri J.M. Nouwen, author of more than 40 books, was considered one of the great spiritual writers of modern times. He taught at the University of Notre Dame, Harvard and Yale, but shared teh alst ten years of his life with people with mental handicaps as pastor of the l'Arche Daybreak community in Toronto, Canada

Since 1985, Holly van Gulden has been teaching and counseling adoptive and foster parents and training adoption professionals. She has worked throughout the United States, England, Scotland, and Canada. In addition, for over fifteen years, she has codirected Adoptive Family Counseling Center. Van Gulden's refreshing blend of humor and compassion has led her to be invited back repeatedly to speak before such national and international organizations as Adoptive Families of America and the North American Council on Adoptable Children. She also serves as a consultant to numerous clinics, residential treatment...

Hosffman Ospino, born in Colombia and currently living in the United States, teaches pastoral theology and religious education at Boston College where he is the director of the university s graduate programs in Hispanic Ministry. He holds a doctorate in theology and education from Boston College. His writings concentrate on the conversation between faith and culture in culturally diverse contexts and how this conversation shapes Christian education and ministry. Dr. Ospino is an officer of the Academy of Catholic Hispanic Theologians of the United States (ACHTUS) and a member of...

Howard P. Bleichner is a systematic theologian at St. Patrick's Seminary in Menlo Park, California, and a leading figure in American priestly formation. He served as president and rector of St. Patrick's Seminary in San Francisco and as rector of the Theological College of the Catholic University of America. He is the author of View from the Altar, and the editor of volumes I and II of the Norms for Priestly Formation and the fourth edition of The Program of Priestly Formation. He lives in Santa Cruz, California.