In the scene of confusion where the murder of Duncan is discovered, Macbeth and Lennox return from the royal chamber; Lennox describes the grooms who, as it seemed, had done the deed:
Their hands and faces were all badged with blood; So were their daggers, which unwiped we found Upon their pillows:
They stared, and were distracted; no man's life Was to be trusted with them.Macb. O, yet I do repent me of my fury That I did kill them.
Macd. Wherefore did you so?
Macb. Who can be wise, amazed, temperate and furious, Loyal and neutral, in a moment? No man: The expedition of my violent love Outrun the pauser, reason. Here lay Duncan, His silver skin laced with his golden blood; And his gash'd stabs look'd like a breach in nature For ruin's wasteful entrance: there, the murderers, Steep'd in the colours of their trade, their daggers Unmannerly breech'd with gore: who could refrain, That had a heart to love, and in that heart Courage to make's love known?
At this point Lady Macbeth exclaims, 'Help me hence, ho!' Her husband takes no notice, but Macduff calls out 'Look to the lady.' This, after a few words 'aside' between Malcolm and Donalbain, is repeated by Banquo, and, very shortly after, all except Duncan's sons exeunt. (The stage-direction 'Lady Macbeth is carried out,' after Banquo's exclamation 'Look to the lady,' is not in the Ff. and was introduced by Rowe. If the Ff. are right, she can hardly have fainted away. But the point has no importance here.)
Does Lady Macbeth really turn faint, or does she pretend? The latter seems to have been the general view, and Whately pointed out that Macbeth's indifference betrays his consciousness that the faint was not real. But to this it may be answered that, if he believed it to be real, he would equally show indifference, in order to display his horror at the murder. And Miss Helen Faucit and others have held that there was no pretence.
In favour of the pretence it may be said (1) that Lady Macbeth, who herself took back the daggers, saw the old King in his blood, and smeared the grooms, was not the woman to faint at a mere description;
But to the last argument it may be replied that she would not willingly have run the risk of leaving her husband to act his part alone. And for other reasons (indicated above, p. 373 f.) I decidedly believe that she is meant really to faint. She was no Goneril. She knew that she could not kill the King herself; and she never expected to have to carry back the daggers, see the bloody corpse, and smear the faces and hands of the grooms. But Macbeth's agony greatly alarmed her, and she was driven to the scene of horror to complete his task; and what an impression it made on her we know from that sentence uttered in her sleep, 'Yet who would have thought the old man to have had so much blood in him?' She had now, further, gone through the ordeal of the discovery. Is it not quite natural that the reaction should come, and that it should come just when Macbeth's description recalls the scene which had cost her the greatest effort? Is it not likely, besides, that the expression on the faces of the lords would force her to realise, what before the murder she had refused to consider, the horror and the suspicion it must excite? It is noticeable, also, that she is far from carrying out her intention of bearing a part in making their 'griefs and clamours roar upon his death'
It should be observed that at the close of the Banquet scene, where she has gone through much less, she is evidently exhausted.
Shakespeare, of course, knew whether he meant the faint to be real: but I am not aware if an actor of the part could show the audience whether it was real or pretended. If he could, he would doubtless receive instructions from the author.