Guilt has a large part in manipulating how Macbeth and his wife act after they have committed their crimes. It is their guilt that drives them both mad. Before they have even killed Duncan, Macbeth feels guilty and considers backing out of the murder, but Lady Macbeth won't let him. Once again Macbeth sees that what he is doing is morally wrong, but he doesn't let that stop him. He kills the king despite his reservations.
Macbeth begins hearing things as soon as the murder is completed. Lady Macbeth faints at the news that Duncan is dead. Whether it is a trick on her part to throw the oth…
