"What distinguishes war and politics from all other techniques is that the material that is employed is a human material. Now human efforts and lives can no more be treated as blind instruments than human work can be treated as simple merchandise; at the same time as he is a means for attaining an end, man is himself an end. The word useful requires a complement, and there can be only one: man himself. And the most disciplined soldier would mutiny if skillful propaganda did not persuade him that he is dedicating himself to the cause of man: to his cause."