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Lady Macbeth’s instinctive desires, or her id (in Freudian terms), constantly battles with Macbeth’s conscience, or superego, but once Lady Macbeth’s superego dominates her mind and Macbeth’s id drives him to madness, the couple instigates their own tragic downfall. According to Freud, every human’s basic needs and initial wants originate in the id (“Freud’s Concepts”). The id does not recognize right from wrong; it supplies “all of our aggressions and desires.” Also known as the “pleasure principle,” the id, if not contained, could lead to the destruction of others and possibly the destruction of oneself. Because of these destructive tendencies, theologians believe the Devil possesses any person with an overpowering id (Guerin et. al.
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