what does Macbeth realize that the witches and apparitions are? And were it is found?

When he first meets them, he calls them "filthy hags" but is quite happy with his "good fortune". Banquo warns Macbeth that the witches only seek to betray his trust. I think Macbeth knows this but the fruit they dangle is just too tempting. Macbeth wants to believe what they say, so he makes it reality. Macbeth regards the witches with scorn yet he is drawn to their suggestions at the same time. He realizes the witches are evil but welcomes it as well. This is the paradox or equivocation that the play is built on.