John Whitney

“Starting out from the fact that the frustrated predominate among the early adherents of all mass movements and that they usually join of their own accord, it is assumed:
1) that frustration of itself, without any proselytizing prompting from the outside, can generate most of the peculiar characteristics of the true believer;
2) that an effective technique of conversion consists basically in the inculcation and fixation of proclivities and responses indigenous to the frustrated mind.”
― Eric Hoffer, The True Believer: Thoughts on the Nature of Mass Movements