"To rush into the thick of battle and to be slain in it," says a Prince of Mito, "is easy enough, and the merest churl is equal to the task; but," he continues, "it is true courage to live when it is right to live, and to die only when it is right to die," and yet the Prince had not even heard of the name of Plato, who defines courage as "the knowledge of things that a man should fear and that he should not fear."