The scene begins with a letter to Lady Macbeth from Macbeth informing her of his encounter with the weird sisters, his new position of power and his ideas for the future.

In the letter, Macbeth talks about the witches, saying that they have `more than mortal knowledge', meaning that he believes that they have been prophesising about him, and not making up the idea of him becoming King. He refers to his wife as his, `dearest partner of greatness', which will become even truer as we go on through the play when Macbeth becomes King. Macbeth believes that he has been `promis'd' the role of King by the witches, so, he will get it, as will Lady Macbeth, doing whatever it takes to get there. The letter from Macbeth is a summary of what has happened so far in the play, talking mainly about...