But such is not the case. You do not have to believe anything that is not true; you simply have to understand the machinery of the subconscious, and how to operate it. We are only beginning to acquire that knowledge, and we need an open mind, free both from the dogmatism of the medical men and the fanaticism of the "faith curists." A few years ago in London I met a number of people who were experimenting in an entirely open-minded way with mental healing, and I was interested in their ideas. I happened to be traveling on the Continent, and on the train my wife was seized by a very dreadful headache. She was lying with her head in my lap, suffering acutely, and I thought I would try an experiment, so I put my hand upon her forehead, without telling her what I was doing, and concentrated my attention with the greatest possible intensity upon her headache. I had an idea of the cause of it; I understood that headaches are caused by the irritation of the sensory nerves of the brain by fatigue poisons, or other waste matter which the blood has not been able to eliminate. I formed in my mind a vivid picture of what the blood would have to do to relieve that headache, and I concentrated my mental energies upon the command to her subconscious mind that it should perform these particular functions. In a few minutes my wife sat up with a look of great surprise on her face and said, "Why, my headache is gone! It went all at once!" That, of course, might have been a coincidence; but I tried the experiment many times, and it happened over and over. On another occasion I was able to cure the pain of an ulcerated tooth; I was able to cure it half a dozen times, but never permanently, it always returned, and finally the tooth had to come out. My wife experimented with me in the same way, and found that she was able to cure an attack of dyspepsia; but, curiously enough, she at once gave herself a case of dyspepsia--something she had never known in her life before. So now I will not allow her to experiment with me, and she will not allow me to experiment with her! But we are quite sure that people with psychic gifts can definitely affect the subconscious mind of others by purely mental means. We are prepared to believe in the miracles of the New Testament, and in the wonders of Lourdes, as well as in the healings of the Christian Scientists and the New Thoughters, which cannot be disputed by any one who is willing to take the trouble to investigate. We can face these facts without losing our reason, without ceasing to believe that everything in life has a cause, and that we can find out this cause if we investigate thoroughly. CHAPTER XIII EXPLORING THE SUBCONSCIOUS (Discusses automatic writing, the analysis of dreams, and other methods by which a whole new universe of life has been brought to human knowledge.)