ABSTRACT
In the history of mankind one bloody chapter follows another almost without interruption; and the picture has remained unchanged right up to the present day. The only difference is that now we possess atomic weapons, and in the event of war we run the risk of destroying ourselves. We have subdued the forces of nature, we have conquered epidemics and wiped out the beasts of prey that once threatened us. Now we are our own greatest enemy, unless we succeed in taming our aggressive urges.
