We can now understand why that moment was pathogenic, as well as why it chose those particular symbols. Through the conception of regression, the theory is freed from the narrow formula of the importance of the events in childhood, and the actual conflict thus gets that significance which, from an empirical standpoint, belongs to it implicitly. Freud himself introduced the conception of regression in his “Three Contributions,” acknowledging rightly that our observations do not permit us to seek the cause of neurosis exclusively in the past. If it is true, then, that reminiscent matter becomes active again as a rule by regression, we have to consider the following question: Have, perhaps, the apparent effective results of reminiscences to be referred in general to a regression of the libido? As I said before, Freud suggested in his “Three Contributions,” that the infantilism of neurotic sexuality was, _for the greater part, due to the regression of the libido_. This statement deserves greater prominence than it there received. Freud did give it this prominence in his later works to a somewhat greater extent. The recognition of the regression of the libido very largely reduces the etiological significance of the events of childhood. It has already seemed to us rather astonishing that the Œdipus- or the Electra-complex should have a determining value in regard to the onset of a neurosis, since these complexes exist in everyone. They exist even with those persons who have never known their own father and mother, but have been educated by their step-parents. I have analyzed cases of this kind, and found that the incest-complex was as well developed as in other patients. It seems to us that this is good proof that the incest-complex is much more a purely regressive production of phantasies than a reality. From this standpoint, the events in childhood are only significant for the neuroses in so far as they are revived later through a regression of the libido. That this must be true to a great extent is also shown by the fact that the infantile sexual shock never causes hysteria, nor does the incest-complex, which is common to everyone. The neurosis only begins as soon as the incest-complex becomes actuated by regression.