Psychotherapy is open to large abuse. It will happen that men who are not trained in diagnosis will occasionally try to use psychotherapeutic means when what is needed is the knife, the actual cautery, a good purge, some strong drug, or other efficient remedy whose value has been demonstrated and which any trained physician can use. It will also happen that men who lack tact will occasionally disturb patients' minds still further by what they say to them in a mistaken attempt at psychotherapy, and will sometimes suggest other symptoms and make sufferers worse by their clumsy attempts to remove symptoms that are already present. Every good thing, however, is open to the same objection. Even good food is abused. The use of drugs has been so abused that the abuse has done much to discredit medicine at many periods. There is a Latin proverb which says: "From the abuse of a thing no argument against its use can be drawn." We cannot prevent liability to abuse, and psychotherapy is sure to meet that fate. It has been abused in the past, and is abused now, and always will be abused, but formal study of psychotherapy and its deliberate employment will do more than anything else to limit the inevitable abuse. If its place in history and in medicine is definitely set forth, its problems squarely faced and their solutions definitely suggested, it is much less likely to be misused. At least, then, the whole subject is open for free and frank discussion and for such additions and subtractions as may make this department of therapeutics as important, or at least in a measure as valuable, as climato-therapy or balneo-therapy or mechano-therapy or electro-therapy. The development of each of these subjects has proved helpful. It is true that each specialist has, in the eyes of his colleagues in general practice, exaggerated the significance of his own department. This is true in all specialties, however, and psychotherapy deserves quite as much as any of the subjects we have mentioned to have a place among the text-books of medicine; and so this one is committed to the judgment of clinical observers. Long ago Horace said: Si quid novisti rectius his candidus imperti Si non his utere mecum. {7} HISTORY OF PSYCHOTHERAPEUTICS SECTION I _PSYCHOTHERAPY IN THE HISTORY OP MEDICINE_ CHAPTER I GREAT PHYSICIANS IN PSYCHOTHERAPY "The real physician is the one who cures: the observation which does not touch the art of healing is not that of a physician, it is that of a naturalist." Psychotherapy is as old as the history of medicine and may be traced to the earliest ages. The great physicians of all time have recognized its value, have used it themselves and commended its use to their disciples, though realizing its mysterious side and appreciating its limitations. FIRST PHYSICIAN