What is the primary theme of Shakespeare's "Macbeth"?

In Shakespeare's "Macbeth," the primary theme revolves around the corrupting power of ambition. The play illustrates how unchecked ambition can lead individuals to commit heinous acts and ultimately result in their downfall. Macbeth, initially a valiant hero, is driven to moral corruption after being prophesied to become king. His desire for power overrides his sense of morality, leading him to murder King Duncan and engage in further violent acts to secure his position.

This theme is central to the narrative, as it explores the psychological transformation of Macbeth from a noble warrior to a tyrannical ruler. The consequences of his ambition extend beyond his own demise, affecting the lives of those around him and leading to chaos and suffering in Scotland. Through Macbeth's tragic arc, Shakespeare warns of the dangers of allowing ambition to overshadow ethical considerations, making this theme the most significant in the play.