"As in most of his plays, Shakespeare was not original in this story. In fact the play is based on a real historical incident, and Shakespeare used as his source of inspiration, a book called 'Holinshed's Chronicles'."
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"Of course, Shakespeare did not just copy Holinshed's version of the murder of Duncan. He invented characters and events to suit himself, added Banquo's ghost, and put in touches to please his patron, King James I."
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"Shakespeare's genius lay not in creating an original story, but in giving life to characters, and bringing to our attention ideas that are still relevant today."
