Macbeth: The Main Theme of Evil William Shakespeare's "Macbeth" is a play in which a man by the name of Macbeth, who is presented as a mature man with an uncertain character. At the beginning of the story, Macbeth's character was a character with strong morals. As the play went on though, Macbeth's morality lessened immensely. After killing Duncan he was very paranoid and feared the consequences that would arise. He knew what he had done wrong. In comparing Duncan's murder with his best friend, Banquo's murder, He was much more relaxed after Banquo's death. His character shifted throughout t