The Interpretation of Dreams by Sigmund Freud Chapter 1 Page 25

A second group is formed by those dreams which are indeed self-coherent and have a distinct meaning, but appear strange because we are unable to reconcile their meaning with our mental life. That is the case when we dream, for instance, that some dear relative has died of plague when we know of no ground for expecting, apprehending, or assuming anything of the sort; we can only ask ourself wonderingly: “What brought that into my head?” To the third group those dreams belong which are void of both meaning and intelligibility; they are incoherent, complicated, and meaningless.

The overwhelming number of our dreams partake of this character, and this has given rise to the contemptuous attitude towards dreams and the medical theory of their limited psychical activity. It is especially in the longer and more