When Lady Macbeth tries to gather strength to commit the murder, she describes his blood. During her monologue, she says, “And fill me from head to toe / With the greatest cruelty.” Strengthen my blood” (1.5.49-50). These lines show that blood is a symbol of Lady Macbeth's evil. She desires to be cruel and feel no remorse for the murder. Compared to that of Lady Macbeth, King Duncan's blood is described extremely differently. As Macbeth describes why he killed the guards, he says, “Here lay Duncan, / His silver skin mingled with his golden blood” (2.3.130-131). Duncan's blood is golden. This represents Duncan's goodness and kindness. Lady Macbeth's blood and Duncan's blood are completely opposite, as are their characters. In conclusion, blood is used to symbolize characters, including Lady Macbeth and Duncan, in the