The Interpretation of Dreams by Sigmund Freud Chapter 3 Page 21

awakening seem wiser than the continuance of sleep.

Otherwise we could not explain the fact of our being always awakened by stimuli of certain quality. As the old physiologist Burdach pointed out, the mother is awakened by the whimpering of her child, the miller by the cessation of his mill, most people by gently calling out their names. This attention, thus on the alert, makes use of the internal stimuli arising from repressed desires, and fuses them into the dream, which as a compromise satisfies both procedures at the same time. The dream creates a form of psychical release for the wish which is either suppressed or formed by the aid of repression, inasmuch as it presents it as realized. The other procedure is also satisfied, since the continuance of the sleep is assured. Our ego here gladly behaves like a child; it