Read the excerpt from act 5, scene 1 of The Tragedy of Macbeth. Lady Macbeth is sleepwalking and rubbing her hands together as if she were trying to remove a spot from them. A doctor and a gentlewoman are observing her.Lady Macbeth. 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 who knows it, when none can call our power to account?—Yet who would have thought the old man to have had so much blood in him.Doctor. Do you mark that?Lady Macbeth. The thane of Fife had a wife: where is she now?—What, will these hands ne’er be clean?—No more o’ that, my lord, no more o’ that: you mar all with this starting.Doctor. Go to, go to; you have known what you should not.Gentlewoman. She has spoke what she should not, I am sure of that: heaven knows what she has known.Lady Macbeth. Here’s the smell of the blood still: all the perfumes of Arabia will not sweeten this little hand. Oh, oh, oh!