My son, attend to my words; incline thine ear unto my sayings.

Few recognize the influence of the mind over the body. God has so organized our beings that pure, noble, holy thoughts in general have not only an elevating and ennobling effect upon the mental and moral constitution, but also an invigorating influence upon the physical system. And, on the contrary, every unclean, ignoble, unchaste, unholy thought (as well as act) has a direct effect not only toward debasement of mind and morals, but also toward the germination of seeds of disease already in the constitution of the fallen race.