Discuss the sources of evil in "Macbeth", in detail.

Macbeth is a tragic play, evoking the gradual deterioration of the hero, from good to evil, inevitably resulting Macbeth to lose his political supremacy and die; a great catastrophic end. A source of evil present in the play is Macbeth himself, with boundless ambition to usurp the throne, yet it seems that these desires are left as a mere dream. However, two other external sources of evil - the Three Witches and Lady Macbeth - ignites Macbeth, and manipulates the hero to execute immoral and iniquity actions, against his ethical consciences. Throughout the play, the humane sides of Macbeth…