"stars hide your fires, let not light see my black and deep desires" A1S4 Macbeth
-Conflict between light and dark - echoes conflict within Macbeth between good and evil.
-Foreshadows Macbeth's dishonorable and treacherous acts as Duncan regards stars as "signs of nobleness" and Macbeth suggests these must stay hidden.
-Rhyming pattern often seen in forces of evil like the witches.