War neuroses have taught us the dreadful potency of the emotional stimulus of fear; but this power of feeling over the unconscious has its good side too.

Here we find psychology justifying the often criticized emotional element of religion.

Its function is to increase the energy of the idea.

The cool, judicious type of belief will never possess the life-changing power of a more fervid, though perhaps less rational faith.

Thus the state of corporate suggestibility generated in a revival and on which the success of that revival depends, is closely related to the emotional character of the appeal which is made.