Why do you think Macbeth does not tell Lady Macbeth about his plan to murder Banquo and Fleance?

Macbeth decides to have Banquo and Fleance killed to prevent the witches's prophecy from coming to pass. Although he worked closely with his wife in plotting Duncan's murder, Macbeth chooses not to include her in his decision to have Banquo and Fleance killed. It is possible he is trying to protect her, or that he fears that she will not approve of his decision and will try to talk him out of it.

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After killing King Duncan and becoming king himself, Macbeth is paranoid and fears any threat to his title. Earlier in the play, the witches prophesize that Banquo's descendants will inherit the throne. To prevent the witches' prediction from being realized and in an effort to secure his position as king, Macbeth decides that Banquo and Fleance must be killed. Although Macbeth and his wife previously conspired to kill Duncan and take his throne, Macbeth elects not to tell his wife of his plans to have Banquo and Fleance killed.

There are several possible reasons why Macbeth chooses not to inform his wife of his plans. He vaguely tells her that something terrible will happen and when she presses him to elaborate, he replies, "Be innocent of the knowledge, dearest chuck, / Till thou applaud the deed." It is possible Macbeth is trying to protect his wife. He tells her to "be innocent," which can be interpreted as him wanting her to have plausible deniability in the event that the murders are...

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