Always loved this great bit from Hamlet:
KING CLAUDIUS: Now, Hamlet, where's Polonius?
HAMLET: At supper.
KING CLAUDIUS: At supper! where?
HAMLET: Not where he eats, but where he is eaten: a certain convocation of politic worms are e'en at him. Your worm is your only emperor for diet: we fat all creatures else to fat us, and we fat ourselves for maggots: your fat king and your lean beggar is but variable service, two dishes, but to one table: that's the end.
KING CLAUDIUS: Alas, alas!
HAMLET: A man may fish with the worm that hath eat of a king, and eat of the fish that hath fed of that worm.
KING CLAUDIUS: What dost you mean by this?
HAMLET: Nothing but to show you how a king may go a progress through the guts of a beggar.