nobility

"And oftentimes, to win us to our harm, the instruments of darkness tell us truths, win us with honest trifles, to betray's in deepest consequence."

highlights Banquo's understanding that evil can be deceptive and that appearances can be misleading, a sign of his wisdom and integrity

"What, can the devil speak true?"

question demonstrates Banquo's critical thinking and his initial skepticism towards the witches, even when they offer positive predictions

"Keep my bosom franchised and allegiance clear"

demonstrates Banquo's unwavering loyalty to King Duncan and his determination to remain true to his moral principles, even when faced with temptation

“My noble partner, you greet with present grace and great prediction of noble having and of royal hope”

shows Banquo's initial trust and respect for Macbeth, and his belief in Macbeth's inherent nobility