Differing views of Macbeth and Banquo

Macbeths views are  that he is interested and wants to know more “would they had stayed”. Once he  learned that he is actually the Thane of Cawdor, his interest turns to  belief that this may well be true and that he will be king, this makes him  question whether he will have to think something involving “killing the king” to take the throne or as he became the thane of Cawdor maybe this is something that will just happen “if chance will have me king, why, chance may crown me, without my stir”. Banquo has the view that this is not something that is important or that should be believed and it is not true what they are hearing, but rather it is the devil “witches”  seeking to influence them “the instruments of darkness tell us truths, win us with honest trifles, the betray us in deepest consequence”.