De vulgari eloquentia (I, xi, 2)

(2) Sicut ergo Romani se cunctis preponendos extimant, in hac eradicatione sive discerptione non inmerito eos aliis preponamus, protestantes eosdem in nulla vulgaris eloquentie ratione fore tangendos. Dicimus igitur Romanorum non vulgare, sed potius tristiloquium, ytalorum vulgarium omnium esse turpissimum; nec mirum, cum etiam morum habituumque deformitate pre cunctis videantur fetere. Dicunt enim: Mezzure, quinto dici? (2) Accordingly, since the Romans believe that they should always receive preferential treatment, I shall begin this work of pruning or uprooting, as is only right, with them; and I do so by declaring that they should not be taken into account in any didactic work about effective use of the vernacular. For what the Romans speak is not so much a vernacular as a vile jargon, the ugliest of all the languages spoken in Italy; and this should come as no surprise, for they also stand out among all Italians for the ugliness of their manners and their outward appearance. They say things like 'Messure, quinto dici?' [Sir, what do you say?]