A few thought-provoking quotes, in ascending order of shock value...
"You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete." - Buckminster Fuller
"What prevents the achievement in reality of peaceful social arrangements throughout the world is not chance, not fate, not stupidity, not individual error or wrongdoing, but the unlimited will to power of sovereign states." - Allen Wheelis
"The people can always be brought to the bidding of the leaders. That is easy. All you have to do is tell them they are being attacked, and denounce the pacifists for lack of patriotism and exposing the country to greater danger." - Hermann Goering, second in command of the Third Reich, at the Nuremberg Trials in 1945
"Bush and bin Laden are really on the same side: the side of faith and violence against the side of reason and discussion. Both have implacable faith that they are right and the other is evil. Each believes that when he dies he is going to heaven. Each believes that if he could kill the other, his path to paradise in the next world would be even swifter." - Richard Dawkins