Beginning of Essay
“Fair is foul, and foul is fair” (I.i.10). This becomes the key phrase in describing Macbeth's downfall. It defines the night vs. day motif, foreshadowing the evil that will soon come. The night vs. day motif is so important in bringing out the theme of ev ....

Middle of Essay
.... sets in and Macbeth's guilt starts to get the best of him. He slowly starts going mad because of his guilt and begins to worry. Macbeth tries to snap out of it and act normal so that nobody will suspect anything, but he gets worse. “Methought I heard a voice cry, ‘Sleep no more! Macbeth does murder sleep'” (II.ii.35-36). Macbeth's sleeplessness means the more sleep he loses, the more he is exposed to night, which is evil. The witches play a key role in turning Macbeth into the paranoid, dangerous person that he his. They basically ignite the tragedy as well as Macbeth's fate when they tell him he will be Thane of Cawdor. Macbeth wa ....