In Act I, Scene 3 I think that the main idea is that there is a debate between Macbeth and himself. Lines 128 – 142 talk about Macbeth’s new situation of meeting with three witches, who prophesise that Macbeth will become Thane of Cawdor, and then he will become king. This is made true when Macbeth becomes the Thane of Cawdor, and now Macbeth is thinking about becoming king and what it would take. He ponders to himself that maybe he might have to provoke the