Here's the smell of the blood still: all the perfumes of Arabia will not sweeten this little hand.
I still smell the blood. All the perfumes of Arabia won't make this little hand smell sweet.
Lady Macbeth · Act 5, Scene 1
Lady Macbeth's most heartbreaking line comes as she continues her sleepwalking soliloquy. She has moved beyond the practical concern of washing away evidence to the metaphysical horror that no perfume, no force in nature, can cleanse her. It is the inverse of her earlier confidence that a little water clears them of this deed.
Out, damned spot! out, I say!--One: two: why, then, 'tis time to do't.--Hell is murky!--Fie, my lord, fie! a soldier, and afeard?
Get out, damn spot! Get out, I say! One, two—well, it's time to do it. Hell is dark! Fie, my lord, fie! A soldier, and afraid?
Lady Macbeth · Act 5, Scene 1
In her sleepwalking scene, Lady Macbeth tries to scrub invisible blood from her hands while reliving the murder of Duncan. The woman who called on spirits to unsex her and fill her with cruelty is now consumed by the horror of what she has done. The spot—the bloodstain—cannot be removed, and neither can the guilt it represents.
Foul whisperings are abroad: unnatural deeds Do breed unnatural troubles: infected minds To their deaf pillows will discharge their secrets: More needs she the divine than the physician. God, God forgive us all! Look after her; Remove from her the means of all annoyance, And still keep eyes upon her. So, good night: My mind she has mated, and amazed my sight. I think, but dare not speak.
Terrible rumors are spreading: unnatural actions Lead to unnatural problems: troubled minds Will spill their secrets to their pillows, which can’t hear them: She needs divine help more than a doctor. God, God forgive us all! Look after her; Take away anything that might hurt her, And keep watching her. So, good night: She’s troubled my mind and stunned my senses. I think I understand, but I’m too afraid to say it.
A Doctor of Physic · Act 5, Scene 1
The doctor, watching Lady Macbeth sleepwalk and confess murder in her sleep, names what the play has been showing: disorder breeds disorder, and the mind cannot be healed by medicine when it has been poisoned by action. His statement stands as the play's diagnosis — that unnatural deeds rupture nature itself and leave the guilty mind forever infected. It suggests that some crimes cannot be cured, only endured.