“There is an urge to self-transcendence and, with it, the victims of tension, becomes acute and agonizing. In every human culture certain procedures for achieving temporary self-transcendence, and thereby relieving tension, have been developed and systematically employed. These procedures may be classified under a few comprehensive headings. There are chemical methods, the musical and gymnastic methods, the methods that depend on the subjection of insulated individuals to the influence of the crowds, the various religious methods and, finally the methods whose purpose is mystical self-transcendence -the various yogas and spiritual exercises of Oriental and Western traditions.”