Yet by strength alone no athlete can excel; success depends upon skill. He must have the strength to work with, but he must have the knowledge to apply it without wasting energy, and the ability to do this with precision. He must practise well the sport he intends to adopt—in other words, train his central nervous system. Here, again, we must hark back to the main idea—the unity of the body. We have already dealt in this essay with the bodily needs in the way of food and exercise, and we must now consider the needs of its nervous components. The chief of these is education; but education of the nervous system means, of course, education of the whole body. There are still people who cling to the old fallacy that the mind can be developed at the expense of the body, but a visit to a hospital or a lunatic asylum will afford many opportunities of seeing how Nature avenges ill-treatment of ‘those delicate tissues wherein the soul transacts its earthly business.’ Physical culture must come before mental: _Mens sana in corpore sano_—hackneyed, but true. I do not, of course, say that a man must develop equally both his body and mind; only, that the former must be functionally competent. The absurdity of supposing that the brain can benefit by forming part of an unhealthy body is, surely, obvious to all. Determined invalids may produce splendid work, as Darwin did, in spite of ill-health, but not because of it, and men of great mental energy will sometimes wear themselves out prematurely by their restlessness; but starvation and maltreatment of the body will not create intellect, however morbidly it may stimulate the imagination. Granting the tenement of a healthy body, the education of the central nervous system must proceed along four distinct lines. A child must learn useful reflex actions, such as walking; have its association centres trained, that it may reason quickly and correctly; be endued, if it is not to live upon a desert island, with a sense of moral responsibility and ethical principles; and have its head stored with useful facts, from the meaning of words and the A B C to the value of the coinage.