He theorized that dreams are a mask to inhibit childhood desires for fulfillment. The masked desires present in the dreamer's consciousness are repressed during sleep. The “manifest content” is what keeps the dream alive. “Latent content” is what exists before dream control. By receiving information about the patient's unconscious conflicts, Sigmund establishes the two manifest and latent contents. The three main divisions of the human mind distinguished by Sigmund consist of the unconscious, the conscious, and the preconscious. The unconscious is welcomed only through psychoanalytic therapy; the conscious includes all the material that is in our awareness; and the preconscious is made up of mental substances that we can simply pay attention to. Sigmund believes that the reason people are unable to connect their unconscious thoughts to their conscious ones is because ideas are