In addition to his mind, it is his never-ending ambition and his blind trust of the witches prophesies which ultimately change Macbeth from what he once was to the monster he had become. Over the entirety of the play the changes in morals, personality, and confidence within Macbeth and Lady Macbeth can clearly be seen as a result of their ambition for the crown of Scotland. Lady Macbeth, first presented as strong and able to commit murder, eventually went insane due to her guilty conscience and killed herself. Macbeth on the other hand, went from a sincere, conscientious person into a maniacal monster which no one could control. Thus they well deserve the title Malcolm appoints them at the end of the play: "the dead butcher and his fiend-like queen." (V, sc viii, 69)...
