The dream-work, to which I return after this digression, subjects the thought material uttered in the optative mood to a very peculiar elaboration. First of all it proceeds from the optative to the indicative mood; it substitutes “it is” for “would it were!” This “it is” is destined to become part of an hallucinatory representation which I have called the “regression” of the dream-work. This regression represents the path from the mental images to the sensory perceptions of the same, or if one chooses to speak with reference to the still unfamiliar—not to be understood anatomically—topic of the psychic apparatus, it is the region of the thought-formation to the region of the sensory perception. Along this road which runs in an opposite direction to the course of development of psychic complications the dream-thoughts gain in clearness; a plastic situation finally results as a nucleus of the manifest “dream picture.” In order to arrive at such a sensory representation the dream-thoughts have had to experience tangible changes in their expression. But while the thoughts are changed back into mental images they are subjected to still greater changes, some of which are easily conceivable as necessary, while others are surprising. As a necessary secondary result of the regression one understands that nearly all relationships within the thoughts which have organized the same are lost to the manifest dream. The dream-work takes over, as it were, only the raw material of the ideas for representation, and not the thought-relations which held each other in check; or at least it reserves the freedom of leaving the latter out of the question. On the other hand, there is a certain part of the dream-work which cannot be traced to the regression or to the recasting into mental images; it is just that part which is significant to us for the analogy to wit-formation. The material of the dream-thoughts experiences an extraordinary compression or _condensation_ during the dream-work. The starting-points of this condensation are those points which are common to two or more dream-thoughts because they naturally pertain to both or because they are inevitable consequences of the contents of two or more dream-thoughts, and since these points do not regularly suffice for a prolific condensation new artificial and fleeting common points come into existence, and for this purpose preferably words are used which combine different meanings in their sounds. The newly framed common points of condensation enter as representatives of the dream-thoughts into the manifest dream-content, so that an element of the dream corresponds to a point of junction or intersection of the dream-thoughts, and with regard to the latter it must in general be called “overdetermined.” The process of condensation is that part of the dream-work which is most easily recognizable; it suffices to compare the recorded wording of a dream with the written dream-thoughts gained by