=The sexual organs have two functions.=--Now, in the case of a boy or a man, the sexual organs have a double function. The first function is to secrete a peculiar energy that is absorbed by the body. It is this energy that makes a boy a perfect boy when he is fourteen or fifteen, that changes him from a perfect boy into a perfect man, and that keeps up his perfect manhood through life. We usually speak of a boy’s sexual glands as being wholly inactive, having nothing to do until he reaches puberty. This is not true. It is true however that what we call semen is not formed by his glands until puberty. If two boys were made eunuchs, one when only a few days old and the other when puberty came, there would be quite a difference between them at the age of twenty-five. Both would be inferior men, but the second would be in many respects superior to the first. This can be explained only on the ground that the glands of the second boy formed a vital energy before puberty, and it was this energy that made the difference between them. Now we see that this first function of our sexual nature is going on all the time. It is this function that keeps the sexual system in a condition, when at the proper age and under proper conditions, the man can become a father. These illustrations absolutely show that a boy, or a young man, does not have to gratify his passions. A boy can live as pure a life as a girl. =The effects of impure thinking.=--The secret of living a pure life is in controlling the mind and knowing how to use this energy. The mind has the power to stimulate many of the glands of the body to greater activity. For example, suppose that you have been hard at work for six hours, then you come into the presence of some fine fruit or a table spread with good things. What happens? Your mouth begins to water. What causes this? The sight of food. Not exactly. The sight of the food caused your mind to think of the food, to long for it. You remember how the different things taste. The longer you have to wait, the more your mouth waters. Now the philosophy of it is this, your mind is stimulating the little salivary glands in your mouth and causing them to secrete the saliva rapidly. Just now you hear some one crying, Fire! Fire! Looking through the window, you see the neighbor’s building is on fire. You rush over and for one hour you try to put out the flames, save some property or someone’s life. Your mind is wholly withdrawn from all thought of food. During that hour your salivary glands secrete just enough saliva to keep your mouth moist, perhaps the heat and labor left your mouth dry. Now you return home and your attention is called back to the food. Again the saliva is formed rapidly, ten or twenty times as fast as while you were fighting the fire. Now, when a boy has impure thoughts in relation to his sexual organs, the mind stimulates passion. If he is under the age of puberty, constant passion will injure his