The Nature of Evil in Shakespeare's Macbeth Essay. Macbeth: The Nature Of Evil In Macbeth, the character of Macbeth has a. firm and correct grasp of self-knowledge, and a well developed concept of the universe and his place in it. He willfully disregards his own moral thoughts and institutions.
The main theme of Macbeth—the destruction wrought when ambition goes unchecked by moral constraints—finds its most powerful expression in the play’s two main characters. Macbeth is a courageous Scottish general who is not naturally inclined to commit evil deeds, yet he deeply desires power and advancement.