Appearance and reality is a very important theme of Macbeth.
At the beggining of the play, everybody looks like what they are and what they do.
But after Macbeth and Banquo learned the prophesy, things start to change.
Macbeth changes from a good general to a murderer when he kills the king.
But he looked like the friendly general for a long time. Nobody exept Banquo thought it could be him who murdered the King. So his appearance was totally different then what he really was.
People discover his real face when he kills Macduff's familly and Banquo.
He became a tyrant and showed his real temper for the rest of the play.
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