Banquo calls the witches instruments, or forces, of darkness and evil that desire to lure unassuming innocents to danger through deceit, characterizing the witches as eerie, but powerful supernatural beings that wish to inflict harm upon others. Through this description of the witches, Shakespeare effectively suggests that malicious ambition or desire is dangerous and disrupts normal natural order. Later, as Lady Macbeth plots to kill King Duncan in order to expedite Macbeth’s ascent to Scotland’s throne, she implores evil spirits to make the night thick and black so that “heaven” cannot “peep through the blanket of the dark,/ To cry 'Hold, hold!’” (1.5.60-61) when King Duncan is murdered. Shakespeare compares the image of smothering the kingdom like a heavy blanket to an unnaturally dark night that conceals Lady Macbeth’s violent ambition-fuelled deed and suffocates the people within, effectively conveying his message that desire can cause destruction and unrest. Finally, after the murder of King Duncan, a man named Ross comments on the abnormal way that “dark night strangles the