The Interpretation of Dreams by Sigmund Freud Chapter 4 Page 39

recognition is impossible for no other reason than that a repugnance, a will to suppress, exists in relation to the subject-matter of the dream or in relation to the wish which the dream creates. Dream disfigurement, then, turns out in reality to be an act of the censor. We shall take into consideration everything which the analysis of disagreeable dreams has brought to light if we reword our formula as follows: The dream is the (disguised) fulfillment of a (suppressed, repressed) wish.

Now there still remain as a particular species of dreams with painful content, dreams of anxiety, the inclusion of which under dreams of wishing will find least acceptance with the uninitiated. But I can settle the problem of anxiety dreams in very short order; for what they may reveal is not a new aspect of the dream