The Origin and Nature of Emotions

The Origin and Nature of Emotions is a classic psychology text by George W. Crile. It would seem that if the striking changes produced by fear and anger and by physical trauma in the master organ of the body-- the brain--were due to WORK, then we should expect to find corresponding histologic changes in other organs of the body as well. We therefore examined every organ and tissue of the bodies of animals which had been subjected to intense fear and anger and to infection and to the action of foreign proteins, some animals being killed immediately; some several hours after the immediate effects of the stimuli had passed; some after seances of strong emotion had been repeated several times during a week or longer.