Every student needs to understand the relation between plain living and high thinking. It rests with us individually to decide whether our lives shall be controlled by the mind or by the body. The youth must, each for himself, make the choice that shapes his life; and no pains should be spared that he may understand the forces with which he has to deal, and the influences which mold character and destiny.Ed 202.1

Intemperance is a foe against which all need to be guarded. The rapid increase of this terrible evil should arouse every lover of his race to warfare against it. The practice of giving instruction on temperance topics in the schools is a move in the right direction. Instruction in this line should be given in every school and in every home. The youth and children should understand the effect of alcohol, tobacco, and other like poisons in breaking down the body, beclouding the mind, and sensualizing the soul. It should be made plain that no one who uses these things can long possess the full strength of his physical, mental, or moral faculties.Ed 202.2

But in order to reach the root of intemperance we must go deeper than the use of alcohol or tobacco. Idleness, lack of aim, or evil associations, may be the predisposing cause. Often it is found at the home table, in families that account themselves strictly temperate. Anything that disorders digestion, that creates undue mental excitement, or in any way enfeebles the system, disturbing the balance of the mental and the physical powers, weakens the control of the mind over the body, and thus tends toward intemperance. The downfall of many a promising youth might be traced to unnatural appetites created by an unwholesome diet.Ed 202.3

Tea and coffee, condiments, confectionery, and pastries are all active causes of indigestion. Flesh food also is harmful. Its naturally stimulating effect should be a sufficient argument against its use; and the almost universally diseased condition of animals makes it doubly objectionable. It tends to irritate the nerves and to excite the passions, thus giving the balance of power to the lower propensities.Ed 203.1

Those who accustom themselves to a rich, stimulating diet, find after a time that the stomach is not satisfied with simple food. It demands that which is more and more highly seasoned, pungent, and stimulating. As the nerves become disordered and the system weakened, the will seems powerless to resist the unnatural craving. The delicate coating of the stomach becomes irritated and inflamed until the most stimulating food fails of giving relief. A thirst is created that nothing but strong drink will quench.Ed 203.2

It is the beginnings of evil that should be guarded against. In the instruction of the youth the effect of apparently small deviations from the right should be made very plain. Let the student be taught the value of a simple, healthful diet in preventing the desire for unnatural stimulants. Let the habit of self-control be early established. Let the youth be impressed with the thought that they are to be masters, and not slaves. Of the kingdom within them God has made them rulers, and they are to exercise their Heaven-appointed kingship. When such instruction is faithfully given, the results will extend far beyond the youth themselves. Influences will reach out that will save thousands of men and women who are on the very brink of ruin.Ed 203.3

Chapter 21—Study of Physiology

Diet and Mental Development