Throughout the entire period of history and, from what we may infer, long before that time, no phase of man's social life has found so rich a field for expression as the religious. Because the his tory of mankind has been woven into the warp and woof of innumerable supernatural beliefs, all of which, however, have so much in common, it is fitting that a chapter should be devoted to the appeal of religion to the emotional or primitive side of man.