Macbeth, at first, has an argument with himself. He doesn't want to believe in the superstition and the weird sisters, but on the other hand, what they are offering him is news that he deems to be beneficial to himself and his family. In the end, he is still wary of them (reminding himself that their 'gift' often comes with a cost) but he embraces their prophecies whole heartedly and sets about to do what he can do to make them come true.