Sufi Master Sheikh Din Muhammad Abdullah al-Dayemi embodies the lessons of spiritual love and God-realization. He is the spiritual teacher and western successor of the Dayera Sharif, a 750 year-old Sufi Dynasty and is the director of the Dayemi Tariqat, a spiritual, educational and service organization that has branches in the United States, Europe and Bangladesh.

Father Thomas Keating is a founder of the Centering Prayer Movement and of Contemplative Outreach, an organization dedicated to teaching spiritual contemplation to laypersons and clergy. He is an author, teacher, and monk who has worked for many years to foster understanding among the world's religions. His books include "Open Mind, Open Heart" and "Intimacy with God."