Courage is almost a contradiction in terms. It means a strong desire to live taking the form of a readiness to die. “He that will lose his life, the same shall save it,” is not a piece of mysticism for saints and heroes. . . A soldier surrounded by enemies, if he is to cut his way out, needs to combine a strong desire for living with a strange carelessness about dying. He must not merely cling to life, for then he will be a coward, and will not escape. He must not merely wait for death, for then he will be a suicide, and will not escape. He must seek his life in a spirit of furious indifference to it; he must desire life like water and yet drink death like wine.
G.K. Chesterton, Orthodoxy (1908), Ch. 6 The Paradoxes of Christianity.