An action is either represented on the stage, or being done elsewhere is there related. The things which enter by the ear affect the mind more languidly, than such as are submitted to the faithful eyes, and what a spectator presents to himself. You must not, however, bring upon the stage things fit only to be acted behind the scenes: and you must take away from view many actions, which elegant descrition Facundia praesens. Hor. Ars 184 The recital of an actor present, which ought to be made with all the pathetic; facundia; or a recital instead of the action, facundia facti vicaria, quae rem quasi oculis praesentem sistit. may soon after deliver in presence [of the spectators]. Let not Medea murder her sons before the people; nor the execrable Atreus openly dress human entrails: nor let Progne be metamorphosed into a bird, Cadmus into a serpent. Whatever you show to me in this manner, not able to give credit to, I detest.
Let a play which would be inquired after, and though seen, represented anew, be neither shorter nor longer than the fifth act. Neither let a god interfere, unless a difficulty worthy a god's unraveling should happen; nor let a fourth person be officious to speak. The poet does not forbid a fourth person to speak, but would have him say very little, as the Scholiast understands the precept. Indeed, a conversation of three people is most agreeable, because it is less confused and less divides the attention of an audience.
