In order to teach a course in the history of Western religious thought, I had to do a great deal of research in the writings within the Judaic and Christian traditions and I was astonished to find in those writings philosophical thought of great power and sophistication. These writings completely blew away all my opinions about what I had taken to be the irrationality or immaturity of religious ideas, opinions which were and still are fashionable in many intellectual and literary circles today.