Quote by Sigmund Freud

“Two entirely distinct state of consciousness were present which alternated very frequently and without warning and which became more and more differentiated in the course of the illness. In one of these states she recognized her normal surroundings; she was melancholy and anxious, but relatively normal. In the other state she hallucinated and was "naughty" —that is to say, she was abusive, used to throw the cushions at people, so far as the contractures at various times allowed, tore buttons off her bedclothes and linen with those of her fingers which she could move, and so on. At this stage of her illness if something had been moved in the room or someone had entered or left it (during her other state of consciousness) she would complain of having "lost" some time and would remark upon the gap in her train of conscious thoughts.”

Quote by Sigmund Freud