It is the doctrine of the armed establishment of the United States that when American men lead a personal life which is based on high moral standards, and when their aim is equally high as to physical fitness and toughness, under training conditions they will mature those qualities which are most likely to produce inspired leading and stout following within the forces. There is nothing panty-waist about this doctrine. It was not pronounced to gratify the clergy or to reassure parents that their sons would be in good hands, even though these things, too, are important. The doctrine came of the experience of the Nation in war, and of what the services learned by measuring their own men. But it happened, also, that the facts were consistent with a common sense reckoning of the case. Let's figure it out. To be temperate in all things, to be continent, and to refrain from loose living of any sort, are acts of the will. They require self-denial, and a foregoing of that which may be more attractive, in favor of the thing which should be done. Granted that there are a few individuals who are so thin-blooded that they never feel tempted to digress morally, men in the majority are not like that. What they renounce in the name of self-discipline, at the cost of a considerable inner stress, they endeavour to compensate by their gains in personal character. Making that grade isn't easy; but no one who is anyone has yet said that it isn't worthwhile. In the armed services there is an old saying that an officer without character is more useless than a ship with no bottom. In the summing up, the strength of will which enables a man to lead a clean life is no different than the strength of purpose which fits him to follow a hard line of duty. There are exceptions to every rule. Many a lovable rounder has proved himself to be a first-class fighting man. But even though he had an unconquerable weakness for drink and women, his resolution had to become steeled along some other line or he would have been no good when the pay-off came. Putting aside for the moment the question of the vices, and regarding only the gain to moral power which comes of bodily exercise and physical conditioning, it should be self-evident that the process which builds the muscle must also train and alert the mind. How could it be otherwise? Every physical act must have as its origin a mental impulse, conscious or unconscious. Thus in training a man to master his muscles we also help him to master his brain. He comes out of physical training not only better conditioned to move but better prepared to think about how and why he is moving, which is true mobility.