In days of peace, the soldier performs maneuvers and wearies himself by gratuitous toil. If you would not have a man flinch when the crisis comes, train him before it comes. Indoor all this for three or four days at a time, sometimes for more, so that it may be a test of yourself instead of a mere hobby. Then I assure you, my dear Lucilius, you will leap for joy when filled with a penny worth of food"