I was in the chair at a most interesting meeting at the Wakefield Asylum last night. It was, too, a curious sensation, sleeping under the same roof as 1,500 lunatics. I was kept awake by thoughts of the kind of sleep that was going on about me. … I made some preliminary remarks on the wide and desolate borderland of cerebral disturbance that lies between sleep and mania.

— Richard Monckton Milnes, letter to Henry Bright, Nov. 26, 1873