“The genes supply the motivation for warfare, [E. O.] Wilson is saying, in humans as they do in chimps, but people, blessed with the power of language, look for some objective cause of war. A society psychs itself up to go to war by agreeing that their neighbors have wronged them, whether by seizing property or failing to deliver on some promise. Religious leaders confirm that the local deity favors their cause and off go the troops. ”

“Nonviolent action on behalf of justice is no automatic forumla with promise of success: but neither is war. After all, at least half of the people who go to war for some cause deemed worthy of it are defeated.”

“You say it is the good cause that hallows even war? I say unto you: it is the good war that hallows any cause. War and courage have accomplished more great things than love of the neighbor. Not your pity but your courage has so far saved the unfortunate.”

“This new war, like the previous one, would be a test of the power of machines against people and places; whatever its causes and justifications, it would make the world worse. This was true of that new war, and it has been true of every new war since...I knew too that this new war was not even new but was only the old one come again. And what caused it? It was caused, I thought, by people failing to love one another, failing to love their enemies.”

“You think wars get started because some duke gets shot, or someone cuts off one’s ear, or someone’s sited their missiles in the wrong place. It’s not like that. That’s just well, just reasons, which haven’t got anything to do with it. What really causes wars is two sides that can’t stand the sight of one another and the pressure builds up and up and then anything will cause it. Anything at all.”

“Some people cause happiness wherever they go. Some whenever they go.”