The Interpretation of Dreams by Sigmund Freud Chapter 3 Page 10

the dream to an end. This feeling of dread here replaces dream displacement; I regarded the dream work as having prevented this in the dream of the second class. It is not very difficult to prove that what is now present as intense dread in the dream was once desire, and is now secondary to the repression.

There are also definite dreams with a painful content, without the presence of any anxiety in the dream. These cannot be reckoned among dreams of dread; they have, however, always been used to prove the unimportance and the psychical futility of dreams. An analysis of such an example will show that it belongs to our second class of dreams — a perfectly concealed realization of repressed desires. Analysis will demonstrate at the same time how excellently adapted is the work of displacement to the concealment of desires.