The primary etiologic factors in schizophrenic conditions are still unknown. But empirical psychoanalysis has shown the schizophrenic's mental processes to have a meaning; and theoretical psychoanalysis has enabled us to formulate the concept of its libidinal mechanism as primarily an introversion of instinctual energy normally expended in relationships with people. It has established the dynamic function of fantasy in mental life, the meaning of sexual symbols, and the dynamics of "narcissism." All these contributions can be summarized in the formula: the dream is the normal prototype of the psychosis. More than thirty-three years ago (in 1900) Freud remarked: "The dream is a fragment of the abandoned psychic life of the child. In the psychoses these modes of operation of the psychic apparatus, which are normally suppressed in the waking state, reassert themselves, and then betray