The witches could foretell the future, they can add temptation, and influence Macbeth, but they could not control his destiny. Macbeth created his own misery when he kills people. This causes him to become insecure, because of the reasons for his actions, which in turn causes him to commit more murders. The witches give great enticement, but in the end, it's Macbeth's decision to fall for the temptation. The three Witches are only responsible for introducing the ideas to Macbeth, and putting the ideas in his head, but they are not responsible for his actions throughout the play. However it's more realistic to believe that Lady Macbeth, Macbeth's ambition, and his own responsibilities ended it for him, not the witches. Lady Macbeth is shown early as an ambitious woman who can manipulate Macbeth easily. This is shown in the line "That I may pour my spirits in thine ear"(I,V,26). She is selfless, and wants what is best for her husband. Before the speech that Lady Macbeth gives in act one scene five, Macbeth does not want to go through with the killing of the king. She manipulates Macbeth's self-esteem by playing on his manliness and his bravery. Macbeth has the final say in whether or not to go through with the killing, but he loves Lady Macbeth and wants to make her happy. Lady Macbeth is the dominating individual in the relationship. It seems that she can convince him to do anything as long as she pushes the right buttons. Macbeth's ambition is present before the witch's prophesies. He would never have thought seriously about killing Duncan without the witches. But the combination of his ambitious and the witch's prophecies leads him to kill the king. Lady Macbeth even says,"Thou wouldst be great/ Art not without ambition."(I,V,80-81). Macbeth also says, "his besetting sin: I have no spur/ To prick the sides of my intent, but only/ Vaulting ambition." Macbeth's ambition is shown while he waits to have a succession of kings after him. M...