Originally published in 1959, this book is primarily concerned with the question of psychiatric factors in religion, and, conversely, with that of religious factors in psychiatry. It rejects the Freudian theory that religion is a form of obsessional neurosis. Though this latter hypothesis may explain many of the phenomena of religious observance, it cannot explain the reality of religious experience. He shows how theology may actually be inimical to religious experience and how faith differs from belief and is a response of the whole man.