“To win us our harm, instruments of darkness tell us truths”

• he shows his awareness and suspicion of the Witches’ motives, in contrast to Macbeth’s eagerness to believe them.
• “instruments of darkness” metaphorically refers to the Witches as agents of evil, sent to mislead and manipulate.
• Banquo understands that these forces may speak the truth not to help, but to deceive and destroy.
• introducing the idea that truth can be used as a weapon. 
• uses his caution to highlight the idea of temptation and fate, the Witches don’t lie, but they twist reality in a way that leads people to harm themselves.
• Banquo sees beyond the surface of their “truths” and recognises the danger in trusting them. 
• His insight contrasts sharply with Macbeth’s impulsive ambition, positioning him as a more rational and morally grounded character.
• Shakespeare explores how evil often works subtly, gaining trust through partial truths before leading its victims to ruin.