Now if you are going to win any battle you have to do one thing. You have to make the mind run the body. Never let the body tell the mind what to do. The body will always give up. It is always tired morning, noon, and night. But the body is never tired if the mind is not tired. When you were younger the mind could make you dance all night, and the body was never tired... You've always got to make the mind take over and keep going.
George S. PattonAn incessant change of means to attain unalterable ends is always going on; we must take care not to let these sundry means undo eminence in the perspective of our minds; for, since the beginning, there has been an unending cycle of them, and for each its advocates have claimed adoption as the sole solution of successful war.
George S. Patton