The two weird sisters recite a monologue of sorts, something about qualities of a man, when they are swinging on a trapeze when Coraline visits their theater in alternate reality. It sounded vaguely like Shakespeare to me, but maybe it is original Tim Burton. Does anyone happen to know?
What piece of work is a man! how noble in reason!
how infinite in faculty! in form and moving how
express and admirable! in action how like an angel!
in apprehension how like a god!
~Shakespeare, Hamlet, act II, sc 2
Also, the Beldam (Middle English: Old woman)in the movie is a reference to a poem by John Keats: La Belle Dame Sans Merci.