This is a vital point, and I must not leave it until I have thoroughly impressed it upon your mind. Given the right materials, perfectly prepared, the Principle of Health will positively build you a perfectly healthy body; and you cannot prepare the materials _perfectly_ in any other way that the one I am describing. If you are to have perfect health, you MUST eat in just this way; you can, and the doing of it is only a matter of a little perseverance. What use for you to talk of mental control unless you will govern yourself in so simple a matter as ceasing to bolt your food? What use to talk of concentration unless you can keep your mind on the act of eating for so short a space as fifteen or twenty minutes, especially with all the pleasures of taste to help you? Go on, and conquer. In a few weeks, or months, as the case may be, you will find the habit of scientific eating becoming fixed; and soon you will be in so splendid a condition, mentally and physically, that nothing would induce you to return to the bad old way. We have seen that if man will think only thoughts of perfect health, his internal functions will be performed in a healthy manner; and we have seen that in order to think thoughts of health, man must perform the voluntary functions in a healthy manner. The most important of the voluntary functions is that of eating; and we see, so far, no especial difficulty in eating in a perfectly healthy way. I will here summarize the instructions as to when to eat, what to eat, and how to eat, with the reasons therefor:-- NEVER eat until you have an EARNED hunger, no matter how long you go without food. This is based on the fact that whenever food is needed in the system, if there is power to digest it, the sub-conscious mind announces the need by the sensation of hunger. Learn to distinguish between genuine hunger and the gnawing and craving sensations caused by unnatural appetite. Hunger is never a disagreeable feeling, accompanied by weakness, faintness, or gnawing feelings at the stomach; it is a pleasant, anticipatory desire for food, and is felt mostly in the mouth and throat. It does not come at certain hours or at stated intervals; it only comes when the sub-conscious mind is ready to receive, digest, and assimilate food. Eat whatever foods you want, making your selection from the staples in general use in the zone in which you live. The Supreme Intelligence has guided man to the selection of these foods, and they are the right ones for all. I am referring, of course, to the foods which are taken to satisfy hunger, not to those which have been contrived merely to gratify appetite or perverted taste. The instinct which has guided the masses of men to make use of the great staples of food to satisfy their hunger is a divine one. God has made no mistake; if you eat these foods you will not go wrong.