I sat in a movie theater watching "Schindler's List," asked myself, "Why didn't the Jews fight back?" Now I know why. I sat in a movie theater, watching "Pearl Harbor" and asked myself, "Why weren't we prepared?" Now I know why. Civilized people cannot fathom, much less predict, the actions of evil people. On September 11, dozens of capable airplane passengers allowed themselves to be overpowered by a handful of poorly armed terrorists because they did not comprehend the depth of hatred that motivated their captors. On September 11, thousands of innocent people were murdered because too many Americans naively...