This book views the subject of the lack of belief in the supernatural with a more academic approach than most books on this topic. It came out before the more famous anti-religious books of this century. It covers doubt as it occurred throughout history, even in books within the Bible such as Job and Ecclesiastes that indicate shifts in religious thought and feature characters that openly question their God. Religious readers will gain an appreciation of the tradition of doubting and all readers will find a history of open-minded inquiry included within religions.