For ’tis the sport to have the enginer / Hoist with his own petard,
Act III, Scene 4 · Hamlet
Context
Hamlet reveals that Claudius is sending him to England with Rosencrantz and Guildenstern, who are carrying secret orders. He plans to turn their plot against them and destroy them using their own scheme.
Analysis
The image of the engineer 'hoist with his own petard' (blown up by his own bomb) treats revenge as poetic justice—the schemer becomes the victim of his own trap. Hamlet takes pleasure ('sport') in the symmetry of this reversal, suggesting he values the elegance of the trick as much as the outcome. The metaphor also reframes Hamlet as a counter-plotter rather than a direct avenger: he will not confront his enemies openly but will sabotage their plans from within, mirroring the deceit he condemns.
Essay Tip
Support a thesis that Hamlet has adopted the tactics of his enemies—he no longer seeks open, honorable revenge but instead uses espionage, manipulation, and betrayal, becoming indistinguishable from the court he despises.