A policeman is a charlatan who offers, in return for obedience, to protect him (a) from his superiors, (b) from his equals, and (c) from himself. This last service, under democracy, is commonly the most esteemed of them all. In the United States, at least theoretically, it is the only thing that keeps ice-wagon drivers, Y.M.C.A. secretaries, insurance collectors and other such human camels from smoking opium, ruining themselves in the night clubs, and going to Palm Beach with Follies girls.