Macbeth Quote Analysis

Banquo wonders aloud whether he and Macbeth might have hallucinated the witches by accidentally eating a plant that causes madness.

By personifying reason as something that can be taken "prisoner," Banquo imagines sanity and insanity as a power struggle rather than a medical condition—reason is still present but held captive, unable to function. This metaphor allows him to preserve the possibility that their rational minds are intact but temporarily overruled, rather than admitting the witches were real. It's another defensive maneuver, offering a non-supernatural explanation that keeps the metaphysical implications at bay.

Support a thesis that Banquo's repeated attempts to find non-supernatural explanations (bubbles, hallucination) show he recognizes the prophecies are dangerous specifically if they're real—his skepticism isn't intellectual but protective, while Macbeth's lack of skepticism reveals he wants them to be true.