If we analyze religious or political doctrines with regard to their psychological significance we must differentiate between two problems. We can study the character structure of the individual who creates a new doctrine and try to understand which traits in his personality are responsible for the particular direction of his thinking. [...] The other problem is to study the psychological motives, not of the creator of a doctrine, but of the social group to which his doctrine appeals. The influence of any doctrine or idea depends on the extent to which it appeals to psychic needs in the character structure of those to whom it is addressed. Only if the idea answers powerful psychological needs of certain social groups will it become a potent force in history.