Macbeth Act 3, Scene 4

Macbeth thinks that Banquo has come back from the dead to haunt him. He is becoming very paranoid. He finds it odd that his wife is not phased at all by the fact that he can see Banquo's ghost. It is almost remarkable to him. He begins to wonder what bad things are in his future. Macbeth plans to meet with the witches to find out what he is up against. He also wonders if Macduff poses a threat. This concern has lead him to place spies in his house. Macbeth is determined to stay in control and take out anyone that is a potential threat. He thinks he has gained far too much to lose it now. Ultimately, he is trying to change fate. He wants to father kings.