Throughout the play, Macbeth, Shakespeare weave the theme "Foul is fair and fair is foul" by using events and characters in the play. Numerous times Shakespeare used the witches' predictions, character's personal wants, and character's thoughts to weave the theme.

The first prophecy the witches made about Macbeth becoming king gave Macbeth discomfort. Because he was aware of the fair is foul scheme; he approached the situation skeptically. The other influences caused Macbeth to act impatiently and kill Duncan to become king. The fairness was he has the glory to be king but the foul part he experienced later was the evil he has done drove him to insanity and paranoia. Evidence of this is Macbeth's statement "Better be with the dead whom we, to gain our peace, have sent to peace, than on the torture of the mind to lie in restless ecstasy." (Act III, scene 2)

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