ightened that his secret has been uncovered.
             When the messengers arrive with the news that Macbeth has earned the title of Thane of Cawdor this acts as a catalyst in his lust for power and quest to become king. The contrast between Macbeth and Banquos attitude towards the prophecies shows how Macbeth has great ambitions and is starting to think about killing the king.
             Macbeth's lust for power is strengthened again when Duncan proclaims his son, Malcolm as heir to the throne. Macbeth reacts to this by referring to Malcolm as "a step I must o'erleap."
             Macbeth writes home telling his wife, Lady Macbeth about the witches' prophecies. Lady Macbeth knowing Macbeth so well is aware of what Macbeth is thinking and
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