A lunatic may be "soothed,"... for a time, but in the end, he is very apt to become obstreperous. His cunning, too, is proverbial, and great.... When a madman appears thoroughly sane, indeed, it is high time to put him in a straight jacket.
Edgar Allan Poe (1809–1849), U.S. author. The superintendent of the asylum, in "The System of Doctor Tarr and Professor Fether," Graham's Magazine (1845).