In Macbeth, a play by William Shakespeare, the two main characters demonstrate strengths and weakness. Through out the play Lady Macbeth's early power and strength weakens. Macbeth starts out weak and needs his wife to lead him around then changes to the complete opposite and becomes king. The power shifts from Lady Macbeth to Macbeth.
In the beginning of the play, Shakespeare shows the strength of Lady Macbeth and the weakness of Macbeth. The witches tell Macbeth that he will be king, "All hail, Macbeth, who will soon be king.” Macbeth thinks about killing the King when the other prophecies fulfil'. Then Macbeth thinks that he won't have to do anything to become king. "If chance will have me king, why chance may crown me without my stir.” On the other hand when Lady Macbeth hears about the witches' prophecies she knows that they will have to kill King Duncan, she wants to convince her husband not to wait for Duncan's natural death. But she says Macbeth is too weak to do so, "He is to ful o, the milk of human kindness.” She hears King Duncan will be visiting their castle that night. She immediately gives into the evil spirits, "come you spirits that tend on mortal thoughts, unsex me here, and fil me from the Crown to the toe, top-full of direct cruelty! Make thick my blood.” This gives her the power and strength to tell her husband to kill the king. In the beginning of the story Macbeth needs his wife to encourage him that is what make him weak and her strong.
Toward the middle of the play, Lady Macbeth starts to weaken and lose strength while King Macbeth is finding his. Macbeth is scared that Banquo is a threat to his kingship when he says, "Unsafe while that we must lave our honors in these flattering streams and make our faces vizards to our hearts.” So Macbeth plans to have his friend Banquo murdered. "And with thy bloody and invincible hand cancel and tear to pieces that great bond.” H