“Although in the eighteenth century a de Brosses or a Court de Gébelin might still persist in his glottogonic strivings, by the time of the Enlightenment, philosophers had already laid the basis for the definitive liquidation of the myth of the mother tongue and of the notion of a linguistic paradise existing before Babel.
Rousseau, in his Essai sur l’origine des langues (published posthumously in 1781, but certainly written several decades earlier), used arguments already present in Vico to turn the tables on the older myths.
The very negative characteristics that philosophers had once attributed to the languages after Babel, Rousseau now discovered in the primitive language itself.
Primitive language spoke by metaphors. That meant that, in a primitive language, words did not, and could not, express the essence of the objects that they named. Reacting in front of an unknown object only instinctively, primitive people were slaves to their passions.
Primitive human beings would, metaphorically and erroneously, call beings slightly bigger or stronger than them giants (ch. 3). Such a primitive language was less articulated, closer to song, than a properly verbal language.
It was replete with synonyms to express a single entity in its differing aspects and relations. Furnished with few abstract terms, its grammar was irregular and full of anomalies. It was a language that represented without reasoning (ch. 4).
Furthermore, the very dispersion of peoples after the Flood made research into this original language a vain undertaking (ch. 9). Du Bos, in his Reflexions critiques ur la poésie et sur la peinture (edn: 1764: I, 35) preferred to speak of the language of the age of huts, rather than of the language of origins.
But even this language was not only lost forever: it was radically imperfect. History has begun to assert its rights. A return was impossible, and, in any event, would not have meant a return to a knowledge that was still full and whole.
Concerning the question of the genesis of language, the eighteenth century was divided into two camps; one maintaining a rationalist hypothesis, the other an empirico-sensationalist one.
Authors such as Beauzée and Du Marsais (both collaborators in the Encyclopédie) postulated a thoroughgoing isomorphism between language, thought and reality. Much of the discussion about the rationalization of grammar moved in this direction as well.
Under the heading “Grammar,” for example, Beauzée wrote that “the word is nothing but a sort of painting [tableau] of which the thought is the original.” Language’s proper function was to provide a faithful copy of the original thought.
Thus, it seemed to follow that “there must be a set of fundamental principles, common to all languages, whose indestructible truth is prior to all those arbitrary and haphazard conditions which have given birth to the various idioms which divide the human race.”
During this same period, however, there flowered another current, which Rosiello (1967) has termed “Enlightenment linguistics.” This was based on Lockean empiricism as it has been developed into the sensationalism of Condillac.
In contradistinction to the Cartesian doctrine of innate ideas, Locke has described the human mind as a blank slate, devoid of figures, which drew its ideas directly from the senses. It is through our senses that we have access to the outside world, and through reflection that we know the workings of our minds.
From these two activities derive all simple ideas, which intelligence later takes up, manipulating them and compounding them into the infinite variety of complex ideas.”
Umberto Eco, The Search for the Perfect Language, translated by James Fentress, Blackwell. Oxford, 1995, pp. 106-8.