The body is the servant of the mind. It obeys the operations of the mind, whether they be deliberately chosen or unconsciously expressed. At the bidding of unlawful thoughts the body sinks rapidly into disease and decay; at the command of glad and beautiful thoughts it becomes clothed with youthfulness and beauty.
Disease and health are rooted in thought. Sickly thoughts will express themselves through a sickly body. The people who live in fear of disease are the people who get it. Anxiety quickly demoralises the whole body, and lays it open to the entrance of disease; while impure thoughts, even if not acted out, will sooner shatter the nervous system.
Strong and happy thoughts build up the body. The body is a delicate instrument, which responds readily to the thoughts by which it is impressed, and habits of thought will produce their own effects upon it.
Men will continue to have impure and poisoned blood, so long as they propagate unclean thoughts. Out of a clean heart comes a clean life and a clean body. Out of a defiled mind proceeds a defiled life and a corrupt body. Thought is the fountain of action, life and manifestation; make the fountain pure, and all will be pure. Change of diet will not help a man who will not change his thoughts.
Clean thoughts make clean habits. The so-called saint who does not wash his body is not a saint. He who has strengthened and purified his thoughts does not need to consider the malevolent microbe.
If you would perfect your body, guard your mind. If you would renew your body, beautify your mind. Thoughts of malice, envy, and disappointment, despondency, rob the body of its health and grace. A sour face does not come by chance; it is made by sour thoughts. Wrinkles that mar are drawn by folly, passion, pride.
An excerpt from As a Man Thinketh by James Allen


