Quote Analysis

Concluding his confrontation with Rosencrantz and Guildenstern, Hamlet delivers a final warning using the metaphor of the musical instrument.

The pun on 'fret' (annoy / the ridges on a stringed instrument) condenses Hamlet's warning into a single word: they can irritate him but not control him. The brevity and finality of 'you cannot play upon me'—after the long, accumulating previous speech—feels like a door slamming shut. This is Hamlet claiming the one form of power available to him: the power to remain illegible, to be a text no one can interpret correctly.

Support a thesis that Hamlet's power lies in his refusal to be understood—by insisting he cannot be 'played upon,' he makes himself ungovernable, even if it also makes him isolated.