Few indeed are the medical practitioners who daily prescribe suggestion as well as diet, hygiene and drugs. Yet the physician who makes even a minimum effort in this direction often does more for his patient than his more highly qualified confrere, who makes none. To some, and they naturally the most successful, this endeavor comes without conscious search, and improves with experience, but in some measure it may be acquired by all and no one who has become familiar with its powers will henceforward be content to remain without its constant aid. This power is thoroughly exploited by the irregular practitioner, and the regular practitioner is bound in duty to learn to use it just as thoroughly. What is true for the lesser faculties is eminently true for our most important faculty, the intellect. We all know how intellectual training enables us to accomplish without difficulty what at first seemed almost impossible. Not only that, but we acquire the power to devote ourselves to a subject that was at first irksome, if not actually forbidding. There are educators who insist that this discipline of mind, by which the power to devote ourselves to what we do not care for is gained, is the principal fruit of genuine education. It has been lost, or at least impaired to a great degree, by educational experiments, especially those related to the elective system which pushed interest, instead of discipline, into the foreground of education. In the same way the power of self-control, and the faculty of self-denial, so precious to the human race, have been lessened by the methods of training which omitted the consideration of these and emphasized the idea of personal comfort. Much can be done to make the unpleasant things that are inevitable in life not only tolerable, but actually to give a satisfaction surpassing selfish pleasure. It is this discipline that is needed in psychotherapy at the present time and the physician must endeavor to encourage it by every means in his power. The one purpose of the use of suggestion in therapeutics, then, is to secure as far as possible concentration of mind on a single idea. This is what is done in hypnosis, but frequently in such a way as to leave the idea {197} to work out unfavorably associated suggestions. If there could, in the conscious state, be the same absolute concentration of mind on an idea, a great force for good, without accompaniment of ill, would be secured. Experience has shown that with patient effort and definite methods such concentration of attention on a single idea can be secured, at least to such an extent as to make it efficiently therapeutic.