HAMLET [...] 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. 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. CLAUDIUS What dost thou mean by this? HAMLET Nothing but to show you how a king may go a progress through the guts of a beggar.

Shakspeare's Dramatic Works (ed. 1791)