The dream thoughts which we learn from the analysis exhibit themselves as a psychical complex of the most complicated superstructure. Their parts stand in the most diverse relationship to each other; they form backgrounds and foregrounds, stipulations, digressions, illustrations, demonstrations, and protestations. It may be said to be almost the rule that one train of thought is followed by its contradictory. No feature known to our reason whilst awake is absent. If a dream is to grow out of all this, the psychical matter is submitted to a pressure which condenses it extremely, to an inner shrinking and displacement, creating at the same time fresh surfaces, to a selective interweaving among the constituents best adapted for the construction of these scenes. Having regard to the origin of this stuff, the term _regression_ can be fairly applied to this process. The logical chains which hitherto held the psychical stuff together become lost in this transformation to the dream content. The dream work takes on, as it were, only the essential content of the dream thoughts for elaboration. It is left to analysis to restore the connection which the dream work has destroyed. The dream's means of expression must therefore be regarded as meager in comparison with those of our imagination, though the dream does not renounce all claims to the restitution of logical relation to the dream thoughts. It rather succeeds with tolerable frequency in replacing these by formal characters of its own. By reason of the undoubted connection existing between all the parts of dream thoughts, the dream is able to embody this matter into a single scene. It upholds a _logical connection_ as _approximation in time and space_, just as the painter, who groups all the poets for his picture of Parnassus who, though they have never been all together on a mountain peak, yet form ideally a community. The dream continues this method of presentation in individual dreams, and often when it displays two elements close together in the dream content it warrants some special inner connection between what they represent in the dream thoughts. It should be, moreover, observed that all the dreams of one night prove on analysis to originate from the same sphere of thought. The causal connection between two ideas is either left without presentation, or replaced by two different long portions of dreams one after the other. This presentation is frequently a reversed one, the beginning of the dream being the deduction, and its end the hypothesis. The direct _transformation_ of one thing into another in the dream seems to serve the relationship of _cause_ and _effect_. The dream never utters the _alternative "either-or,"_ but accepts both as having equal rights in the same connection. When "either-or" is used in the reproduction of dreams, it is, as I have already mentioned, to be replaced by "_and_."