The Interpretation of Dreams by Sigmund Freud Chapter 7 Page 18

Like the other psychic formations of its group, the dream offers itself as a compromise serving simultaneously both systems by fulfilling both wishes in so far as they are compatible with each other. A glance at Robert's “elimination theory,” will show that we must agree with this author in his main point, viz. in the determination of the function of the dream, though we differ from him in our hypotheses and in our treatment of the dream process.

The above qualification — in so far as the two wishes are compatible with each other — contains a suggestion that there may be cases in which the function of the dream suffers shipwreck. The dream process is in the first instance admitted as a wish-fulfillment of the unconscious, but if this tentative wish-fulfillment disturbs the foreconscious to such an