Flat-footedness is only one result of weak muscles. Eye-strain is another; ptosis, or falling of the organs, is another. In a majority of cases the best treatment for any of these troubles is an understanding attempt to go to the root of the matter by bracing up the whole mental tone. The most scientific oculists do not try to correct eye trouble due to muscular insufficiency by any special prisms or glasses. They know that the eyes will right themselves when the general health and the general spirits improve. I have found by repeated experience with nervous patients that it takes only a short time for people who have been unable to read for months or years to regain their old faculty. So remarkable is the power of mind. SUMMARY We have found that the gap between the body and the mind is not so wide as it seems, and that it is bridged by the subconscious mind, which is at once the master of the body and the servant of consciousness. In recording the physical effects of suggestion and emotion, we have not taken time to describe the galvanometers, the weighing-machines and all the other apparatus used in the various laboratory tests; but enough has been said to show that when doctors and psychologists speak of the effect of mind on body, they are dealing with definite facts and with laws capable of scientific proof. We have emphasized the fact that downcast and fearful moods have an immediate effect on the body; but after all, most people know this already. What they do not know is the real cause of the mood. When a nervous person finds out why he worries, he is well on the way toward recovery. An understanding of the cause is among the most vital discoveries of modern science. The discussion, so far, has merely prepared us to plunge into the heart of the question: What is it that in the last analysis makes a person nervous, and how may he find his way out? This question the next two chapters will try to answer. CHAPTER VII _In which we go to the root of the matter_ THE REAL TROUBLE PIONEERS =Following the Gleam.= Kipling's Elephant-child with the "'satiable curiosity" finally asked a question which seemed simple enough but which sent him on a long journey into unknown parts. In the same way man's modest and simple question, "What makes people nervous?" has sent him far-adventuring to find the answer. For centuries he has followed false trails, ending in blind alleys, and only lately does he seem to have found the road that shall lead him to his journey's end. We may be thankful that we are following a band of pioneers whose fearless courage and passion for truth would not let them turn back even when the trail led through fields hitherto forbidden. The leader of this band of pioneers was a young doctor named Freud. THE SEARCH FOR TRUTH