In the nineteenth century a young man confessed his sins to a peasant priest in the village of Ars in France, Saint John Vianney. The floor began to shake, knocking the fellow over. Vianney picked him up, brushed him off, and said cheerfully: "Do not be afraid, my son. It is only the devil." The young man was impressed but he admitted that he would never go to Vianney for confession again. It is only the devil. It takes courage to say that in the face of terrorism. It is only the devil. That is the simple answer but it is hard to say.