Diogenes Allen is a distinguished scholar in the field of the philosophy of religion. He is a member of the Society for the Study of Christian Spirituality and of the Leibniz Gesellschaft. He has produced a number of videotapes and study guides based on his books, including Temptation and Eight Deadly Thoughts, and regularly teaches adult education classes and leads retreats for churches. Among the projects he is currently working on are a book on success, and the entry for†philosoph? for The Oxford Companion to Christian Thought. The title of his lecture is "The Tree of Knowledge and Divine Providence."