Themes of Macbeth

The Corrupting Power of Unchecked Ambition

The main theme of Macbeth—the destruction wrought when ambition goes unchecked by moral constraints—finds its most powerful expression in the play’s two main characters. Macbeth is a courageous Scottish general who is not naturally inclined to commit evil deeds, yet he deeply desires power and advancement. He kills Duncan against his better judgment and afterward stews in guilt and paranoia. Toward the end of the play he descends into a kind of frantic, boastful madness. Lady Macbeth, on the other hand, pursues her goals with greater determination, yet she is less capable of withstanding the repercussions of her immoral acts. One of Shakespeare’s most forcefully drawn female characters, she spurs her husband mercilessly to kill Duncan and urges him to be strong in the murder’s aftermath, but she is eventually driven to distraction by the effect of Macbeth’s repeated bloodshed on her conscience. In each case, ambition—helped, of course, by the malign prophecies of the witches—is what drives the couple to ever more terrible atrocities. The problem, the play suggests, is that once one decides to use violence to further one’s quest for power, it is difficult to stop. There are always potential threats to the throne—Banquo, Fleance, Macduff—and it is always tempting to use violent means to dispose of them.

Fortune, Fate, and Free Will

Fortune is another word for chance. The ancient view of human affairs frequently referred to the "Wheel of Fortune," according to which human life was something of a lottery. One could rise to the top of the wheel and enjoy the benefits of superiority, but only for a while. With an unpredictable swing up or down, one could equally easily crash to the base of the wheel.

Fate, on the other hand, is fixed. In a fatalistic universe, the length and outcome of one's life (destiny) is predetermined by external forces. In Macbeth, the Witches represent this influence. The play makes an important distinction: Fate may dictate what will be, but how that destiny comes about is a matter of chance (and, in a Christian world such as Macbeth's) of man's own choice or free will.

Although Macbeth is told he will become king, he is not told how to achieve the position of king: that much is up to him. We cannot blame him for becoming king (it is his Destiny), but we can blame him for the way in which he chooses to get there (by his own free will).

Kingship and Natural Order

Macbeth is set in a society in which the notion of honor to one's word and loyalty to one's superiors is absolute. At the top of this hierarchy is the king, God's representative on Earth. Other relationships also depend on loyalty: comradeship in warfare, hospitality of host towards guest, and the loyalty between husband and wife. In this play, all these basic societal relationships are perverted or broken. Lady Macbeth's domination over her husband, Macbeth's treacherous act of regicide, and his destruction of comradely…