" Luther’s chronic stomach troubles have also been linked to a psychosomatic problem. His neurotic phobias all seemed to go directly to his stomach, destroying his digestion. His problem with flatulence has become legendary, due in part to his own exaggeration of it. His writings are sprinkled with references to his constant belching and breaking of wind. He said, “If I break wind in Wittenburg, they will hear it in Leipzig.” Fortunately Luther was able to find a sanctified use for his flatulence. He advised his students that the breaking of wind was a most effective device to repel the attacks of the devil. Elsewhere Luther spoke of resisting Satan by throwing an inkwell at him. Luther described his battle with Satan in the terms of a man under siege. He was sure that he was a personal target of the prince of hell. "

― R.C. Sproul , The Holiness of God