Why actors never stop acting

You could never tell who might come into the Restaurant Maillaux, or what might be the effect of her charm, her youth, her piquancy, on some guest who was looking for just that, who had almost, perhaps, decided not to produce that delightful little play because nowhere, in no casting office, had he found just the girl, with just the charm, the piquancy, for the leading part. And here, where he would least expect it, he would come upon the girl, drudging with hats and coats as Cinderella drudged at whatever menial tasks Cinderella drudged at. (Cecily was not very precise on this.)

(from Murder Is Served, by Richard and Frances Lockridge)