Pathetic accents suit a melancholy countenance; words full of menace, an angry one; wanton expressions, a sportive look; and serious matter, an austere one. For nature forms us first within to every modification of circumstances; she delights or impels us to anger, or depresses us to the earth and afflicts us with heavy sorrow: then expresses those emotions of the mind by the tongue, its interpreter. If the words be discordant to the station of the speaker, the Roman knights and plebians will raise an immoderate laugh. It will make a wide difference, whether it be Davus that speaks, or a hero; a man well-stricken in years, or a hot young fellow in his bloom; and a matron of distinction, or an officious nurse; a roaming merchant, or the cultivator of a verdant little farm; a Colchian, or an Assyrian; one educated at Thebes, or one at Argos. You, that write, either follow tradition, or invent such fables as are congruous to themselves. If as poet you have to represent the renowned Achilles; let him be indefatigable, wrathful, inexorable, courageous, let him deny that laws were made for him, let him arrogate every thing to force of arms. Let Medea be fierce and untractable, Ino an object of pity, Ixion perfidious, Io wandering, Orestes in distress. If you offer to the stage any thing unattempted, and venture to form a new character; let it be preserved to the last such as it set out at the beginning, and be consistent with itself. It is difficult to write with propriety on subjects to which all writers have a common claim; and you with more prudence will reduce the Iliad into acts, than if you first introduce arguments unknown and never treated of before. A public story will become your own property, if you do not dwell upon the whole circle of events, which is paltry and open to every one; nor must you be so faithful a translator, as to take the pains of rendering [the original] word for word; nor by imitating throw yourself into straits, whence either shame or the rules of your work may forbid you to retreat.