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....
The youth, in the freshness and vigor of life, little realize the value of their abounding energy. A treasure more precious than gold, more essential to advancement than learning or rank or riches—how lightly it is held! how rashly squandered! How many a man, sacrificing health in the struggle for riches or power, has almost reached the object of his desire, only to fall helpless, while another, possessing superior physical endurance, grasped the longed-for prize! Through morbid conditions, the result of neglecting the laws of health, how many have been led into evil practices, to the sacrifice of every hope for this world and the next! ...
The youth should be taught that the laws of nature are the laws of God—as truly divine as are the precepts of the Decalogue. The laws that govern our physical organism, God has written upon every nerve, muscle, and fiber of the body. Every careless or willful violation of these laws is a sin against our Creator. How necessary, then, that a thorough knowledge of these laws should be imparted! ...
The influence of the mind on the body, as well as of the body on the mind, should be emphasized. The electric power of the brain, promoted by mental activity, vitalizes the whole system, and is thus an invaluable aid in resisting disease.... The power of the will and the importance of self-control, both in the preservation and in the recovery of health, the depressing and even ruinous effect of anger, discontent, selfishness, or impurity, and, on the other hand, the marvelous life-giving power to be found in cheerfulness, unselfishness, gratitude, should also be shown. There is a physiological truth—truth that we need to consider—in the scripture, “A merry [rejoicing] heart doeth good like a medicine” (Proverbs 17:22).—Education, 195-197. RC 137
Our prayers are to be as earnest and persistent as was the petition of the needy friend who asked for the loaves at midnight. The more earnestly and steadfastly we ask, the closer will be our spiritual union with Christ. Pr 310
"My son, attend to my words; incline thine ear unto my sayings. Let them not depart from thine eyes; keep them in the midst of thine heart. For they are life unto those that find them, and health to all their flesh." Proverbs 4:20-22 (King James Version)