Since I find that no one, before myself, has dealt in any way with the theory of eloquence in the vernacular, and since we can plainly see that such eloquence is necessary to everyone – for not only men, but also women and children strive to acquire it, as far as nature allows – I shall try, inspired by the Word that comes from above, to say something useful about the language of people who speak the vulgar tongue, hoping thereby to enlighten somewhat the understanding of those who walk the streets like the blind, ever thinking that what lies ahead is behind them. Yet, in so doing, I shall not bring to so large a cup only the water of my own thinking, but shall add to it more potent ingredients, taken or extracted from elsewhere, so that from these I may concoct the sweetest possible mead.
But since it is required of any theoretical treatment that it not leave its basis implicit, but declare it openly, so that it may be clear with what its argument is concerned, I say, hastening to deal with the question, that I call ‘vernacular language’ that which infants acquire from those around them when they first begin to distinguish sounds; or, to put it more succinctly, I declare that vernacular language is that which we learn without any formal instruction, by imitating our nurses. There also exists another kind of language, at one remove from us, which the Romans called gramatica. The Greeks and some – but not all – other peoples also have this secondary kind of language.