Through these comparisons we observe that up to this point we have not used the word regression in its general, but in a very special sense. If you accord it the general meaning of return from a higher to a lower stage of development you must include suppression as a form of regression, for suppression may also be described as the reversion to an earlier and lower stage in the development of a psychic act. Only in regard to suppression, this tendency to revert is not necessarily involved, for when a psychic act is held back in the early unconscious stage we also term it suppression in a dynamic sense. Suppression is a localized and dynamic conception, regression purely descriptive. What up this point we have called regression and considered in its relation to fixation, was only the return of libido to former stages of its development. The nature of this latter conception is entirely distinct and independent of suppression. We cannot call the libido regressions purely psychical processes and do not know what localization in the psychological apparatus we should assign to them. Even though the libido exerts a most powerful influence on psychic life, its organic significance is still the most conspicuous. Discussions of this sort, gentlemen, are bound to be somewhat dry. To render them more vivid and impressive, let us return to clinical illustrations. You know that hysteria and compulsion-neurosis are the two chief factors in the group of transference neuroses. In hysteria, libidinous return to primary, incestuous sexual objects is quite regular, but regression to a former stage of sexual organization very rare. In the mechanism of hysteria suppression plays the chief part. If you will permit me to supplement our previous positive knowledge of this neurosis by a constructive suggestion, I could describe the state of affairs in this manner: the union of the partial instincts under the domination of the genitals is accomplished, but its results encounter the opposition of the fore-conscious system which, of course, is bound up with consciousness. Genital organization, therefore, may stand for the unconscious but not for the fore-conscious. Through this rejection on the part of the fore-conscious, a situation arises which in certain aspects is similar to the condition existing before the genitals had attained their primacy. Of the two libido regressions, the regression to a former stage of sexual organization is by far the more conspicuous. Since it is lacking in hysteria and our entire conception of the neuroses is still too much dominated by the study of hysteria which preceded it in point of time, the meaning of libido regression became clearer to us much later than that of repression. Let us be prepared to widen and change our attitude still more when we consider other narcistic neuroses besides compulsion-neurosis and hysteria in our discussion.