As we learn through Freud, the dream shows a similar type. Since the dream is unconcerned with the real condition of things, it brings the most heterogeneous matter together, and a world of impossibilities takes the place of realities. Freud finds progression characteristic of thinking when awake; that is to say, the advancement of the thought excitation from the system of the inner or outer perception through the “endopsychic” work of association, conscious and unconscious, to the motor end; that is to say, towards innervation. In the dream he finds the reverse, namely, regression of the thought excitation from the preconscious or unconscious to the system of perception, by the means of which the dream receives its ordinary impression of sensuous distinctness, which can rise to an almost hallucinating clearness. The dream thinking moves in a retrograde manner towards the raw material of memory. “The structure of the dream thoughts is dissolved during the progress of regression into its raw material.” The reanimation of the original perception is, however, only one side of regression. The other side is regression to the infantile memory material, which might also be understood as regression to the original perception, but which deserves especial mention on account of its independent importance. This regression might, indeed, be considered as “historical.” The dream, according to this conception, might also be described as the substitute of the infantile scene, changed through transference into the recent scene.
The infantile scene cannot carry through its revival; it must be satisfied with its return as a dream. From this conception of the historical side of regression, it follows consequently that the modes of conclusion of the dream, in so far as one may speak of them, must show at the same time an analogous and infantile character. This is truly the case, as experience has abundantly shown, so that to-day every one who is familiar with the subject of dream analysis confirms Freud’s proposition that dreams are a piece of the conquered life of the childish soul. Inasmuch as the childish psychic life is undeniably of an archaic type, this characteristic belongs to the dream in quite an unusual degree. Freud calls our attention to this especially.
“The dream, which fulfils its wishes by a short, regressive path, affords us only an example of the primary method of working of the psychic apparatus, which has been abandoned by us as unsuitable. That which once ruled in the waking state, when the psychical life was still young and impotent, appears to be banished to the dream life, in somewhat the same way as the bow and arrow, those discarded, primitive weapons of adult humanity, have been relegated to the nursery.”[[32]]
All this experience suggests to us that we draw a parallel between the phantastical, mythological thinking of antiquity and the similar thinking of children, between the lower human races and dreams.[[33]] This train of thought is not a strange one for us, but quite familiar through our knowledge of comparative anatomy and the history of development, which show us how the structure and function of the human body are the results of a series of embryonic changes which correspond to similar changes in the history of the race. Therefore, the supposition is justified that ontogenesis corresponds in psychology to phylogenesis. Consequently, it would be true, as well, that the state of infantile thinking in the child’s psychic life, as well as in dreams, is nothing but a re-echo of the prehistoric and the ancient.[[34]]
In regard to this, Nietzsche takes a very broad and remarkable standpoint.[[35]]
“In our sleep and in our dreams we pass through the whole thought of earlier humanity. I mean, in the same way that man reasons in his dreams, he reasoned when in the waking state many thousands of years. The first causa which occurred to his mind in reference to anything that needed explanation, satisfied him and passed for truth. In the dream this atavistic relic of humanity manifests its existence within us, for it is the foundation upon which the higher rational faculty developed, and which is still developing in every individual. The dream carries us back into earlier states of human culture, and affords us a means of understanding it better. The dream thought is so easy to us now, because we are so thoroughly trained to it through the interminable stages of evolution during which this phantastic and facile form of theorizing has prevailed. To a certain extent the dream is a restorative for the brain, which during the day is called upon to meet the severe demands for trained thought, made by the conditions of a higher civilization.
“From these facts, we can understand how lately more acute logical thinking, the taking seriously of cause and effect, has been developed; when our functions of reason and intelligence still reach back involuntarily to those primitive forms of conclusion, and we live about half our lives in this condition.”
We have already seen that Freud, independently of Nietzsche, has reached a similar standpoint from the basis of dream analysis. The step from this established proposition to the perception of the myths as familiar dream images is no longer a great one. Freud has formulated this conclusion himself.[[36]]
“The investigation of this folk-psychologic formation, myths, etc., is by no means finished at present. To take an example of this, however, it is probable that the myths correspond to the distorted residue of wish phantasies of whole nations, the secularized dreams of young humanity.”
Rank[[37]] understands the myths in a similar manner, as a mass dream of the people.[[38]] Riklin[[39]] has insisted rightly upon the dream mechanism of the fables, and Abraham[[40]] has done the same for the myths. He says: