enabled, from the sphere of the unconscious, or rather of the subconscious, to restore to the supra-consciousness the lost sexual experiences of childhood or of later life; and by this means to effect a permanent cure of the most diverse diseases. No detailed criticism of this method of treatment will here be attempted, but my views on the matter will to some extent have become apparent from what has been said in earlier parts of this book. The value of Freud's work appears to me to consist chiefly in this, that he has insisted more definitely than other writers upon the reality of subconscious processes. But I believe that the general sexual etiology which he assumes to exist can from no point of view be regarded as sound, even with the limitation which he later imposed upon his own doctrine, namely, that it is not the sexual experience itself, but the reaction against this experience, which is etiologically significant. Recently, I have several times tried to treat by the psycho-analytic method some of the cases for which that method is supposed to be suitable, and as a result of my experience I have been forced more and more to the conclusion that, notwithstanding all the other advantages of the psycho-analytic method, _the importance of the factor of sexual experiences in the causation of disease has been greatly over-estimated by Freud_. Moreover, I believe that the cures effected by Freud (as to the permanence of which, in view of the insufficiency of the published materials, no decisive opinion can as yet be given), are explicable in another way. A large proportion of the good results are certainly fully explicable as the results of suggestion. The patient's confidence in his physician, and the fact that the treatment requires much time and patience, are two such powerful factors of suggestion, that provisionally it is necessary to regard it as possible that suggestion explains the whole matter.