Evil in Macbeth: Good vs. Evil, several sources

Evil In Macbeth
Our own human nature is the root of all evil. Macbeth is the only play where the main character becomes an evil monster.
In no other Shakespearean tragedy does the hero have so firm and correct grasp of self-knowledge, nor a well developed concept of the universe and his place in it. In Macbeth, the character of Macbeth has a perfect ability for moral judgment. He willfully disregards his own moral thoughts and institutions. According to Bernard McElroy, "more than any other Shakespearean hero, he [Macbeth] has a perfectly clear concept of who he is and where he stands --…