So far we have alluded only to suggestion applied during hypnosis; it should be remembered, however, that it is now a settled principle of psychotherapeutics that suggestion also operates, and from a therapeutic point of view is sometimes more efficacious, in the normal waking or sleeping condition; though in the latter case, without complete amenability, the results are seldom so striking. The condition in normal waking life which produces phenomena most closely resembling those of hypnosis is that of strong emotional excitement. We find, also, that in normal life suggestions of the greatest potency and having the most far-reaching effects are conveyed by means of emotional states. Although a close resemblance exists between the result of suggestion in hypnosis and the result of suggestion in normal and emotion states, similarity of result does not, as Dr. Bramwell points out in this connexion, necessarily imply identity of cause. In fact there are some important differences between the two conditions which produce the phenomena, as well as some distinctions between the phenomena themselves: whereas fear, hope, faith, religious excitement and kindred emotions are almost invariably present in cases which are cited as analogous to hypnotic ones, some of these, such as fear and other violent emotions, effectually preclude the production of hypnosis, and further, subjects who are most amenable to emotional suggestions are often those whom it is most difficult to hypnotize.[54] The principle of psychotherapeutics depends, as is well known, upon the close dependence of the organs and normal bodily functions upon the behests of the mind. Hudson expresses this in the form of a proposition, namely: "The subjective mind has absolute control of the functions, conditions and sensations of the body." Although this statement contains a very important principle we should not allow it to obscure the fact of the reverse process. As James, Bain and others have shown, antecedent bodily conditions often react directly upon the mind. The general truth, however, of the proposition may be readily perceived when we remember that perfect anæsthesia can be produced at the will of the operator by suggestion. The effect of mental stimuli upon functional conditions is also commonly observed under normal conditions in such phenomena as blushing, turning pale, the quickening of the pulse, fainting, etc., all of which should be sufficient to convince any one who gives the subject a moment's consideration of the very direct and instant way the mind affects the body.