It is not every judge that discerns inharmonious verses, and an undeserved indulgence is [in this case] granted to the Roman poets. But shall I on this account run riot and write licentiously? Or should not I rather suppose, that all the world are to see my faults; secure, and cautious [never to err] but with hope of being pardoned? Though, perhaps, I have merited no praise, I have escaped censure. Ye [who are desirous to excel,] turn over the Grecian models by night, turn them by day. But our ancestors commended both the numbers of Plautus, and his strokes of pleasantry; too tamely, I will not say foolishly, admiring each of them; if you and I but know how to distinguish a coarse joke from a smart repartee, and understand the proper cadence, by [using] our fingers and ears. Thespis is said to have invented a new kind of tragedy, and to have carried his pieces about in carts, which [certain strollers], who had their faces besmeared with lees of wine, sang and acted. After him Aeschylus, the inventor of the vizard mask and decent robe, laid the stage over with boards of a tolerable size, and taught to speak in lofty tone, and strut in the buskin. To these succeeded the old comedy, not without considerable praise: but its personal freedom degenerated into excess and violence, worthy to be regulated by law; a law was made accordingly, and the chorus, the right of abusing being taken away, disgracefully became silent. Our poets have left no species [of the art] unattempted; nor have those of them merited the least honor, who dared to forsake the footsteps of the Greeks, and celebrate domestic facts; whether they have instructed us in tragedy, of comedy. Nor would Italy be raised higher by valor and feats of arms, than by its language, did not the fatigue and tediousness of using the file disgust every one of our poets. Do you, the decendants of Pompilius, reject that poem, which many days and many a blot have not ten times subdued to the most perfect accuracy. Because Democritus believes that genius is more successful than wretched art, and excludes from Helicon all poets who are in their senses, a great number do not care to part with their nails or beard, frequent places of solitude, shun the baths. For he will acquire, [he thinks,] the esteem and title of a poet, if he neither submits his head, which is not to be cured by even three Anticyras, to Licinius the barber. What an unlucky fellow am I, who am purged for the bile in spring-time! Else nobody would compose better poems; but the purchase is not worth the expense. Therefore I will serve instead of a whetstone, which though not able of itself to cut, can make steel sharp: so I, who can write no poetry myself, will teach the duty and business [of an author]; whence he may be stocked with rich materials; what nourishes and forms the poet; what gives grace, what not; what is the tendency of excellence, what that of error.