At all events the doctor must consistently try to meet his own therapeutic demands if he wishes to assure himself of a proper influence on his patient. All these guiding principles in therapy confront the doctor with important ethical duties which can be summed up in the single rule: be the man through whom you wish to influence others. Mere talk has always been considered hollow, and there is no trick, however cunning, by which one can evade this simple rule for long. The fact of being convinced, and not the subject-matter of conviction—it is this which has always carried weight.
