The witches are the main evil in Macbeth
The witches are the main evil in the play though they only appear four times. The play starts with the witches which gives us the impression that everything begins with the witches and that they cause every evil event in the play. Each time they appear they create an evil atmosphere. They come together with the thunder and with their prophecies they bring forward confusion. They set the mood with their words: “Fair is foul and foul is fair.” Nothing is what it seems and they know it.
My first argument is that without the witches influence Macbeth would never have thought about killing Kind Duncan, because he would never have thought about the possibility that he might be a king. The witches give him this idea by saying that it is his destiny. Normally, people do consciously sense what is right and what is wrong, but with the influence of the witches Macbeth thinks he must do everything that it takes to fulfil his destiny to become king. To him it seems that even killing king Duncan is the right thing to do. Macbeth wants this to happen so badly that he tries to come up with plans and arrange things in order for himself to meet this particular destiny. In this way the witches’ words in the beginning influence the whole plot.
Also an evil person in the play influencing Macbeth is Lady Macbeth. After she hears about the witches and their prophecies she calls the spirits upon her, so that she can play on her husbands ambition. She calls: "Come you spirits, That tend on mortal thoughts, unsex me here, and fill me from the crown to the toe, top-full of direst cruelty:" The spirits give her cruelty and she starts manipulating her husband. These sly tactics are what make Macbeth turn and were one of the reasons why Macbeth did what he did.
Another thing the witches do is make three apparitions appear out of a cauldron. The first apparition is a bloody child, it tells Macbeth "Be bloody, bold, and resolute: Laugh to...