I cannot leave this subject without a further word of solemn warning. In my youth we had mesmerism with its cures, then we had and have spiritualism with its like pretensions. From time to time we have had faith-cures. They come and they go, and have no stable life. The evil they do lives after them in the many mental wrecks they leave. When the charlatan Newton was ordering every class of the sick to get well, I was called upon to see case after case of the most calamitous results on mind and body. Now and then he had the luck to meet some one who was merely idea-sick,--a class of cases we know well. Then he made a cure which would have been as easy to me as to him. I made much inquiry, but could never find a case of organic disease with distinct tissue-changes which he had cured. A man with hopeless rheumatic alterations of joints was made to walk a few steps without crutches. This he did at sore cost of pain, and then came to me to tell me his tale with a new set of crutches, the healer having kept the old set as evidence of the cure. And now we have the mind-cure, Christian science and the like,--a muddle of mystical statements, backed by a medley of the many half-examined facts, which show the influence of mental and moral states over certain forms of disorder. The rarity of these makes them to be suspected. Hardly any have the solid base of a thorough medical study, and we lose sight of them at the moment of cure and learn nothing as to their future.
The books on mind-cure are calculated to make much and serious evil. I have read them with care, and have always risen from them with the sense of confusion which one would have if desired to study a pattern from the back of a piece of embroidery. There is, however, a class of minds which delight in the fogs of mystery, and, when a book puzzles them, accept this as evidence of depth of thought. I have been bewildered at times by the positiveness and reasoning folly of the insane, and I think most trained intelligences will feel that books like these mystical volumes require an amount of care and thinking to avoid bewilderment of which the mass of men and women are not possessed. In a few years they will be the rarely read and dusty volumes, hid away in libraries, and consulted only by those who undertake the sad task of writing the history of credulity. Their creed will die with them, and what is best of it and true will continue to be used by the thoughtful physician, as it has been in all ages. But, meanwhile, it is doing much harm and little good. Every neurologist sees already some of its consequences, and I, myself, have over and over had to undo some of the evil it had done.