“This was not the first time that the world didn’t listen. In college I read Hitler’s Mein Kampf. Fourteen years before the first shot was fired, Hitler announced his plan to destroy the parliamentary system in Germany, to attack France and Eastern Europe, and to eliminate the Jews. Why, I asked the professor, did neither ordinary Germans voting in the Reichstag elections in July 1932, nor foreign leaders reacting to the rise of Nazism, believe him? Why was anyone surprised when he simply did what he said he would do? She had no answer. The fall of my senior year at Princeton, nineteen deeply religious young men flew planes into the World Trade Center and the Pentagon. During the decade before 9/11, Osama Bin Laden had shouted out his warnings of mass murder using all the means of modern communication. And still we were surprised when he did what he said he would do. So I suppose what happened here is that they said what they would do, and we did not listen. Then they did what they said they would do.”