A more sure word of prophesy

Since the mind and the soul find expression through the body, both mental and spiritual vigor are in great degree dependent upon physical strength and activity; whatever promotes physical health promotes the development of a strong mind and a well-balanced character. Without health , no one can as distinctly understand or as completely fulfill his obligations to himself, to his fellow-beings, or to his Creator. Therefore the health should be as faithfully guarded as the character. A knowledge of physiology and hygiene should be the basis of all educational effort. —Education, 195.