Macbeth and Lady Macbeth are two very different minds, striving for the same goals, they both throw of their consciences to fulfill their evil motives.
In Act one, Scene 3 the story line is laid down. The witches speak the prophesies to Macbeth in this Scene. After two of the prophecies come true Macbeth thinks the third prophecy must also come true and that the king will be murdered. He is mortified at the thought of the deed and is truly frightened and disgusted by the mental image. Later he conveys this information to Lady Macbeth in Scene 5 and she responds with jubilee. Macbeth says "If good why do I yield to the suggestion" which shows that he knows he could not do such a horrible act. But Lady Macbeth sees his approach to the third prophecy and launches a counter in scene five line twenty four where she says "Hurry Home, so I may pour my sprits in your ear." This portrays the truly corrupt sprit that has been fueled by her goal to be Queen. While Macbeth is trying as hard as his mind will let him to dismiss the evil images from his mind he realizes that the irony of the prophecies is to much to ignore. Back home