atom there are millions of millions of electrons-tiny particles of electric energy! We cannot see these infinitely minute things, any more than we can see the electricity which runs our trolley cars; but we can see their effects, and we can count and measure them, and deal with them in complicated mathematical formulas, and be just as certain of their existence as we are of the dust under our feet. If you wish to explore this wonderland, read Duncan's "The New Knowledge," or Dr. Henry Smith Williams' "Miracles of Science." Or will you choose the universe of the subconscious, our racial past locked up in the secret chambers of our mind? Or will you choose the universe of the superconscious, the infinity of genius manifested in the arts? By the device of art man not merely creates new life, he tests it, he weighs it and measures it, he tries experiments with it, as the physicist with the molecule and the astronomer with light. He finds out what works, and what does not work, and so develops his moral and spiritual muscles, training himself for his task as maker of life. Written words can give but a feeble idea of the wonders that are found in these enchanted regions of the mind. Here are palaces of splendor beyond imagining, here are temples with sacred shrines, and treasure-chambers full of gold and priceless jewels. Into these places we enter as Aladdin in the ancient tale; we are the masters here, and all that we see is ours. He who has once got access to it-he possesses not merely the magic lamp, he possesses all the wonderful fairy properties of all the tales of our childhood. His is the Tarnhelm and the magic ring which gives him power over his foes; his is the sword Excalibur which none can break, and the silver bullet which brings down all game, and the flying carpet upon which to travel over the earth, and the house made of ginger-bread, and the three wishes which always come true, and the philter of love, and the elixir of youth, and the music of the spheres, and-who knows, some day he may come upon heaven, with St. Peter and his golden key, and the seraphim singing, and the happy blest conversing! CHAPTER XVIII THE UNITY OF THE BODY (Discusses the body as a whole, and shows that health is not a matter of many different organs and functions, but is one problem of one organism.) The reader who has followed our argument this far will understand that we are seldom willing to think of the body as separate from the mind. The body is a machine, to be sure, but it is a machine that has a driver, and while it is possible for a sound machine to have a drunken and irresponsible driver, such a machine is not apt to remain sound very long. Frequently, when there is trouble with the machine, we find the fault to be with the driver; in other words, we find that what is needed for the body is a change in the mind. If you wish to have a sound body, and to keep it sound as long as possible, the first problem for you to settle is what you want to make of your life; you must have a purpose, and confront the tasks of life with energy and interest. What is the use of talking about health to a man who has no moral purpose? He may answer-indeed, I have heard victims of alcoholism answer-"Let me alone. I have a right to go to hell in my own way." I am aware, of course, that the opposite of the proposition is equally true. A man cannot enjoy much mental health while he has a sick body. It is a good deal like the old question, Which comes first, the hen or the egg? The mind and the body are bound up together, and you may try to deal with each by turn, but always you find yourself having to deal with both. Most physicians have a tendency to overlook the mind, and Christian Scientists make a religion of overlooking the body, and each pays the penalty in greatly reduced effectiveness. My first criticism of medical science, as it exists today, is that it has a tendency to concentrate upon organs and functions, and to overlook the central unity of the system. You will find a doctor who specializes in the stomach and its diseases, and is apt to talk as if the stomach were a thing that went around in the world all by itself. He will discuss the question of what goes into your stomach, and overlook to point out to you that your stomach is nourished by your blood-stream, which is controlled by your nervous system, which in turn is controlled by hope, by ambition, by love, by all the spiritual elements of your being. A single pulse of anger or of fear may make more trouble with the contents of your stomach than the doctor's pepsins and digestive ferments can remedy in a week. Of course, you may do yourself some purely local injury, and so for a time have a purely local problem. You may smash your finger, and that is a problem of a finger; but neglect it for a few days, and let blood poison set in, and you will be made aware that the human body is one organism, and also that, in spite of any metaphysical theories you may hold, your body does sometimes dominate and control your mind. Some one has said that the blood is the life; and certainly the blood is both the symbol and the instrument of the body's unity. The blood penetrates to all parts of the body and maintains and renews them. If the blood is normal, the work of renewal does not often fail. If there is a failure of renewal-that is, a disease-we shall generally find an abnormal condition of the blood. The distribution of the blood is controlled by the heart, a great four-chambered pump. One chamber drives the blood to the lungs, a mass of fine porous membranes, where it comes into contact with the air, and gives off the poisons which it has accumulated in its course through the body, and takes up a fresh supply of oxygen. By another chamber of the heart the blood is then sucked out of the lungs, and by the next chamber it is driven to every corner of the body. It takes to every cell of the body the protein materials which are necessary for the body's renewal, and also the fuel materials which are to be burned to supply the body's energy; also it takes some thirty million millions of microscopic red corpuscles which are the carriers of oxygen, and an even greater number of the white corpuscles, which are the body's scavengers, its defenders from invasion by outside germs. There are certain outer portions of the body, such as nails and the scales of the skin, which are dead matter, produced |