(I) A tragedy is the imitation in dramatic form of an action that is serious and complete, with incidents arousing pity and fear with which it causes a climax of such emotions. (II) The chief characters in a tragedy are noble, and the actions they perform are noble actions. (III) The plot involves a change in the heros fortune, in which he falls from happiness to misery. (IV) Unlike tragedy, comedy aims at ridicule and so satirizes. (V) Such misfortune is brought upon him not by his bad character but by some error of judgement.