Go bid thy mistress, when my drink is ready She strike upon the bell. Get thee to bed. Is this a dagger which I see before me, The handle toward my hand? Come, let me clutch thee: I have thee not, and yet I see thee still.
Once Macbeth is alone, he has an unusual experience
Art thou not, fatal vision, sensible To feeling as to sight? or art thou but A dagger of the mind, a false creation, Proceeding from the heat-oppressed brain? I see thee yet, in form as palpable As this which now I draw.
He sees a ghostly dagger indicating the way to Duncan
Thou marshall’st me the way that I was going; And such an instrument I was to use.Mine eyes are made the fools o’ the other senses,Or else worth all the rest: I see thee still; And on thy blade and dudgeon gouts of blood, Which was not so before.
He is convinced that there is no such thing
There’s no such thing: It is the bloody business which informs Thus to mine eyes. Now o’er the one half-world Nature seems dead, and wicked dreams abuse The curtain’d sleep; witchcraft celebrates Pale Hecate’s offerings; and wither’d murder,Alarum’d by his sentinel, the wolf, Whose howl’s his watch, thus with his stealthy pace,
With Tarquin’s ravishing strides, toward his design Moves like a ghost. Thou sure and firm-set earth,Hear not my steps, which way they walk, for fear Thy very stones prate of my whereabout,And take the present horror from the time,Which now suits with it.
He eventually makes his way up to the King's bedchamber
Whiles I threat he lives: Words to the heat of deeds too cold breath gives. [A bell rings. I go, and it is done; the bell invites me. Hear it not, Duncan; for it is a knell That summons thee to heaven or to hell