"I dreamt last night of the three weird sisters. To you they have showed some truth."
"If you shall cleave to my consent, when 'tis, it shall make honor for you"
"I think not of them."
"My hands are of your colour, but I shame to wear a heart so white."
"Go get some water, and wash this filthy witness from your hand."
"I'll go no more. I am afraid to think what I have done; look on't again I dare not."
Banquo is constantly thinking of what the witches had said to him and Macbeth. Macbeth denies that he is also thinking of the witches' prediction and is actively plotting against the king. Macbeth then hallucinates, seeing a knife that shows his desire and ambition for power.
"O horror, horror, horror! Tongue nor heart cannot conceive nor name thee."
Macbeth has killed the king while Lady Macbeth hears an owl, a bad omen. Lady Macbeth and Macbeth then wash their hands of evidence that they killed the king. While Lady Macbeth seems relieved, Macbeth seems consumed by the deed he has done, saying that he can never absolve himself of this crime.
"Well may you see things well done there lest our old robes sit easier than our new."
Macduff arrives at Macbeth's castle to wake the king only to find out that he has been murdered, and the evidence seemingly points to his servants. it is discovered that Macbeth killed the servants, though he explains that he killed them out of rage for what they had done to the king and that the king's sons, Malcolm and Donalbain had fled to England and Ireland respectively.
"O, yet I do repent me of my fury that I did kill them."
"It appears that the servants in his chamber did it."
Macduff has become suspicious of Macbeth's rapid rise to power and the departure of the King's sons to England and Ireland. Macduff speaks to Ross who is informed that Macbeth has been named king. Ross says he will go to the coronation. They share a common suspicion in Macbeth.
"God's benison be with you, with those that would make good of bad, and friends of foes."