Insanity (n.) begins only when the contents of the unconscious take the place of conscious reality — believed in without reserve.
Insanity (n.) shows brutally what neurosis keeps in the background; the pathology lies not in the images but in a consciousness that can no longer control them.
Insanity (n.) is, literally and not as metaphor, a dream that has become real and replaced waking consciousness; the dreamer is normally insane, and the phenomenology of dream and schizophrenia is almost identical.
Insanity (n.) is possession by an unconscious content that is not, and cannot be, assimilated to consciousness because its existence is denied; such narrowness of consciousness is the shortest way to the asylum.
Insanity (n.) is often just our name for what we don't understand; the mad speak of mysteries our dense, lethargic minds cannot yet grasp.