The Theme in the Work
Guilt enters the play the very minute the crime ends. In scene 2 of Act II, Macbeth returns from the king's room saying he could not manage to say amen, that a voice announced he had murdered Sleep, and he asks whether the whole ocean could wash the blood from his hands. Lady Macbeth answers that a little water will clean them of this deed.
Macbeth:
Methought I heard a voice cry 'Sleep no more! / Macbeth does murder sleep,' the innocent sleep, / Sleep that knits up the raveled sleave of care, / The death of each day's life, sore labor's bath, / Balm of hurt minds, great nature's second course, / Chief nourisher in life's feast [...] 'Glamis hath murdered sleep, and therefore Cawdor / Shall sleep no more. Macbeth shall sleep no more.'
In scene 2 of Act III, already king, Macbeth admits that they have only wounded the serpent and that he would rather be with the dead than lie in the torment of his mind, and Lady Macbeth says nothing is gained when desire is satisfied without contentment. In scene 4 of Act III, guilt takes shape: Macbeth sees Banquo's ghost in his place, which the guests do not see, and Lady Macbeth tries to cover the scene and rebukes him for cowardice.
Macbeth:
I drink to th' general joy o' th' whole table, / And to our dear friend Banquo, whom we miss. [...] Avaunt, and quit my sight! Let the earth hide thee! / Thy bones are marrowless, thy blood is cold; / Thou hast no speculation in those eyes / Which thou dost glare with.
In scene 1 of Act V, the guilt she had pushed aside returns as a symptom: sleepwalking, she rubs her hands, speaks of blood, of Duncan, of Banquo, and of the wife of Macduff, and the Doctor concludes that her illness is of the spirit and not of the body.
Lady Macbeth:
Yet here's a spot. [...] 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? What need we fear?
Macbeth's guilt appears even before the crime happens. In scene 7 of Act I, alone, he acknowledges that he is Duncan's kinsman, subject, and host, that murder tends to return upon the one who commits it, and that only ambition pushes him. After the crime, in scene 2 of Act II, he says it would be better not to know who he is and refuses to return to the king's room, because he is afraid to think about what he has done. Lady Macbeth, for her part, admits that she did not kill the king only because he resembled her father as he slept, and warns that if the two think about these deeds in this way they will go mad.
In the last acts guilt changes form. In scene 3 of Act V, Macbeth asks the Doctor to tear out of the queen's memory the deep-rooted sorrow, and the Doctor replies that the patient must find her own remedy. In scene 5 of Act V, he confesses that he no longer feels fear, because he has gorged himself on horror, and in scene 7 of Act V he tells Macduff that he avoided fighting him because his soul is heavy with the blood of Macduff's family.
The play distributes guilt in two rhythms that cross. Macbeth feels it first, in scene 2 of Act II, and carries it into power in the form of nightmare and vision. Lady Macbeth refuses it in scene 2 of Act II and in scene 4 of Act III, and lives it in Act V, when sleep undoes the refusal. Her line on the night of the crime, a little water, and the one from the sleepwalking scene, these hands will never be clean, are the same guilt at different times.
Where It Appears
- Scene 2 of Act II: Macbeth returns from the king's room without having managed to say amen, says he heard a voice announce that he murdered Sleep, and asks whether the whole ocean could wash the blood from his hands.
- Scene 2 of Act III: Macbeth tells Lady Macbeth that they have only wounded the serpent and that he no longer sleeps without nightmares, preferring to be with the dead than to lie in the torment of his mind.
- Scene 4 of Act III: Macbeth sees Banquo's ghost seated in his place, while the guests see nothing, and Lady Macbeth rebukes him for cowardice.
- Scene 1 of Act V: Lady Macbeth walks in her sleep with a candle, rubs her hands, and speaks of a stain, of blood, of Duncan, of Banquo, and of Macduff's wife before the Doctor.
Passages
The voice that condemns Macbeth to sleeplessness:
Methought I heard a voice cry 'Sleep no more! / Macbeth does murder sleep,' the innocent sleep, / Sleep that knits up the raveled sleave of care, / The death of each day's life, sore labor's bath, / Balm of hurt minds, great nature's second course, / Chief nourisher in life's feast [...] 'Glamis hath murdered sleep, and therefore Cawdor / Shall sleep no more. Macbeth shall sleep no more.'
The ocean that will not wash:
Will all great Neptune's ocean wash this blood / Clean from my hand? No, this my hand will rather / The multitudinous seas incarnadine, / Making the green one red.
The ghost only he sees:
I drink to th' general joy o' th' whole table, / And to our dear friend Banquo, whom we miss. [...] Avaunt, and quit my sight! Let the earth hide thee! / Thy bones are marrowless, thy blood is cold; / Thou hast no speculation in those eyes / Which thou dost glare with.
The stain that will not leave:
Yet here's a spot. [...] 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? What need we fear?