It is a mistake to suppose that food must be selected with anxious care to fit the vocation of the person who eats. It is not true that the woodchopper requires "heavy" or "solid" foods and the bookkeeper "light" foods. If you are a bookkeeper, or other brain worker, and do not eat until you have an EARNED hunger, you will want exactly the same foods that the woodchopper wants. Your body is made of exactly the same elements as that of the woodchopper, and requires the same materials for cell-building; why, then, feed him on ham and eggs and corn bread and you on crackers and toast? True, most of his waste is of muscle, while most of yours is of brain and nerve tissue; but it is also true that the woodchopper's diet contains all the requisites for brain and nerve building in far better proportions than they are found in most "light" foods. The world's best brain work has been done on the fare of the working people. The world's greatest thinkers have invariably lived on the plain solid foods common among the masses. Let the bookkeeper wait until he has an earned hunger before he eats; and then, if he wants ham, eggs, and corn bread, by all means let him eat them; but let him remember that he does not need one-twentieth of the amount necessary for the woodchopper. It is not eating "hearty" foods which gives the brain worker indigestion; it is eating as much as would be needed by a muscle worker. Indigestion is never caused by eating to satisfy hunger; it is always caused by eating to gratify appetite. If you eat in the manner prescribed in the next chapter, your taste will soon become so natural that you will never WANT anything that you cannot eat with impunity; and you can drop the whole anxious question of what to eat from your mind forever, and simply eat what you want. Indeed, that is the only way to do if you are to think no thoughts but those of health; for you cannot think health so long as you are in continual doubt and uncertainty as to whether you are getting the right bills of fare. "Take no thought what ye shall eat," said Jesus, and he spoke wisely. The foods found on the table of any ordinary middle-class or working class family will nourish your body perfectly if you eat at the right times and in the right way. If you want meat, eat it; and if you do not want it, do not eat it, and do not suppose that you must find some special substitute for it. You can live perfectly well on what is left on any table after the meat has been removed.