that his only reason for murdering him is is own “vaulting ambition”. At this point he firmly tells Lady Macbeth that, “We will proceed no further in this business”, expressing his desires to enjoy the “golden opinions from all sorts of people”. Lady Macbeth plays a critical role in the build-up to the murder. She uses her powers of persuasion to make Macbeth change his mind after he decides not to go ahead with the murder. She taunts him by questioning his courage: “Art thou afeard? ” She also questions his masculinity, by equating murder to manliness and courage.