Quote Analysis

Gertrude, who cannot see the Ghost, concludes that Hamlet is hallucinating and calls him mad. Hamlet defends himself by pointing to his steady pulse as proof that he is sane, not in the grip of madness ('ecstasy').

Hamlet uses his own body as evidence, invoking the early modern belief that madness disrupts physical rhythms. The metaphor of pulse as 'healthful music' equates sanity with harmony and order, suggesting that rationality can be measured and verified. Yet this moment is deeply ironic: Hamlet is trying to prove he is sane while speaking to a ghost his mother cannot see. The scene traps the audience between two interpretations—either Hamlet is deluded, or Gertrude is morally blind—and offers no way to resolve the ambiguity.

Use this to argue that Hamlet's insistence on his own sanity is undermined by the situation itself—no amount of self-diagnosis can settle the question when the evidence (the Ghost) is invisible to others.