There are people who believe that human beings are naturally aggressive, and that war is a natural way of showing it. Regrettable, they say, 'but it's in our genes'. In fact, scientists have proved that aggression is not inborn, and said so publicly in 1989. [Seville Statement on Violence]
When disarmament is discussed a common thesis is that man is violent by nature and that war is a manifestation of human instinct. Is war the perpetual concomitant of human existence then? If we accept this view, we shall have to reconcile ourselves with continuous development and accumulation of ever more sophisticated weapons of mass destruction. Such thinking is unacceptable. It is reminiscent of times when ever more sophisticated weapons were invented and used to conquer other peoples and enslave arid pillage them. That past is no model for the future.
The Web of War
Changing the Way we Think