Macbeth is seriously conflicted in his mind as he approaches Duncan's chamber and considers the deed which he will commit. As soon as he is alone in the darkness he begins to hallucinate: seeing a ghastly dagger which appears to direct his actions-
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.
Macbeth is under no illusion that his deed is evil, so is aware of the gravity of his sin -
Now o'er the one half-world
Nature seems dead, and wicked dreams abuse
The curtain'd sleep;
He is however regretful that Duncan has to die for him to succeed, and his final lines show the confusion Macbeth has-
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.
Macbeth seems unsure as to whether he is condemning his king to hell or himself. It is inevitable that they will not both end up in the same place.
In what ways does this soliloquy represent an apparent change in Macbeth?