The saving of energy is another form of the question of continuity of work. The ideal of work—as varied as possible, and as interesting as possible—being the joy of life and the greatest good, is an aim hardly yet grasped by more than a very few persons. To the majority, work is a hateful thing, to be done solely in order to get means for enjoyment in some other way. This essentially savage and uncultivated ideal needs to be steadily rooted out by the better adaptation of work to the individual. An education which started by cultivating the natural interests, using them for mental development, and only superadding what further knowledge was really requisite for life, would greatly help to eradicate the false and low idea of work which prevails. There is a common feeling that business cannot be interesting in itself; but there are few, if any, businesses which if intelligently followed will not yield scope for some real interest of observation and study. The greater application of mind to the work of life will leave far less scope for fruitless amusement and—as a great painter remarked—"there is nothing of interest in life to be compared with work." To minds which are incapable of continuity of work, or of relaxation by variation of work, mere amusements are needful. Darwin's health prevented more than two hours' work a day, and the flimsiest of novels was his needful relaxation. But the need of amusement for this purpose must be taken as the index of incapacity for continuity—as an unfortunate failure of mental and physical health—as a disastrous defect when it occurs along with great abilities which can only thus work at low speed. The same may be said of athletics; the need of physical exercise outside of work is an index of incapacity for physical health adapted to the work, an unfortunate failure of those who are of defective condition. The idea that no one can be too strong and robust is a wild exaggeration; physical strength needs to be proportioned to the nature of work, and a slender wiry man will do far better for indoor life than a plethoric mass of brawn and muscle which needs much exercise to keep in health. Unlimited robustness is not an absolute good, to be pursued at all costs, or else we should make every schoolboy a Hun, living without shelter, and feeding on flaps of raw meat which form the only saddle of his horse. In brief, the need of athletics shows a weakness of body to be remedied, or a physical over-development unsuited to the person's work in life; it is the mark of unfitness, and the need ceases so soon as a man is adapted to his work. The need of spending any considerable time on amusement is the sign of an incapacity, which has to be removed by strengthening the mind in the individual or in the race. The passion for amusement is the sure evidence of a defective education, which has left the mind incapable of continuity, or bare of interests. An important advance