In the same way the impression that the words of a fortune-teller make upon one in many cases brings about the realization of his fortune-telling in the end. The fortuneteller is not always a saint, he is not always a clairvoyant who sees what he claims to see; he may be only an imaginative person. But he has said something and that impression has remained with the person; and in the end he realizes that it came true. Then what an impression a physician makes who is authorized by the medical authorities, in whom one immediately places one's trust, even if he was mistaken in finding the real disease; because among a hundred physicians there is hardly one who has insight into the real nature and character of a disease, and among a hundred patients the physician can perhaps only tell correctly the nature and character of one man's complaint. Thus there is great danger of a person being impressed at the beginning of his illness by a right or wrong remark made by a physician about that illness. Among ancient peoples only the physicians knew the names of diseases; but the physician was not allowed to tell the patient what complaint he had, because from a psychological point of view he would be doing wrong. This was not only a medical science, there was a psychological idea attached to it.