2. Certainly, war has not been rooted out of human affairs. As long as the danger of war remains and there is no competent and sufficiently powerful authority at the international level, governments cannot be denied the right to legitimate defense once every means of peaceful settlement has been exhausted. State authorities and others who share public responsibility have the duty to conduct such grave matters soberly and to protect the welfare of the people entrusted to their care. But it is one thing to undertake military action for the just defense of the people, and something else again to seek the subjugation of other nations. Nor, by the same token, does the mere fact that war has unhappily begun mean that all is fair between the warring parties. Those too who devote themselves to the military service of their country should regard themselves as the agents of security and freedom of peoples. As long as they fulfil this role properly, they are making a genuine contribution to the establishment of peace. (Second Vatican Council. Gaudium et Spes, 1965).
2. There never was a good war, or a bad peace (Benjamin Franklin).
3. War is much too serious a matter to be entrusted to the military. (George Clemenceau).
4. The aim and result of war necessarily is not peace but victory, and any victory won by violence necessarily justifies the violence that won it and leads to further violence. If we are serious about innovation, must we not conclude that we need something new to replace our perpetual "war to end war?"