O Hamlet, speak no more. / Thou turn’st mine eyes into my very soul, / And there I see such black and grained spots / As will not leave their tinct.
Act III, Scene 4 · Gertrude
Context
Overwhelmed by Hamlet's accusations, Gertrude begs him to stop. She admits that his words have forced her to see into her own soul, where she now sees stains ('black and grained spots') that will never wash out.
Analysis
Gertrude's language literalizes the metaphor Hamlet introduced earlier—his 'glass' has worked. The phrase 'black and grained spots' suggests sin has soaked into her soul like dye into fabric; the word 'grained' means deep-set, permanent. Her acknowledgment that these spots 'will not leave their tinct' (won't fade) marks a moment of genuine self-recognition: she cannot undo what she has done. This is the play's clearest evidence that Gertrude feels guilt, though she never names the specific crime she is confessing to.
Essay Tip
Support a thesis that Gertrude's guilt is real but vague—she admits to moral stains without specifying whether she means the hasty remarriage, complicity in murder, or something else, leaving her level of knowledge ambiguous.