This volume combines Rousseau's essay on the origin of diverse languages with Herder's essay on the genesis of the faculty of speech. Rousseau's essay is important to semiotics and critical theory, as it plays a central role in Jacques Derrida's book Of Grammatology, and both essays are valuable historical and philosophical documents.

"Rousseau’s Essay on the Origin of Languages is a masterful work of comparative linguistics that opened up new avenues of inquiry in the field." - Noam Chomsky A new 2023 translation into English from the original manuscripts of Rousseau's classic and influential L'Essai sur l'origine des langues (Essay on the Origin of Languages).

Jean-Jacques Rousseau the writer-philosopher was a practicing musician and theorist for years before publication of his first Discourse, but scholars have neglected these fertile, inexhaustible ideas because they were either unavailable in a critical edition or viewed as standing outside the aegis of his system of thought. This graceful translation remedies both those failings by bringing together the Essay with a comprehensive selection of the musical writings. Many of the latter are responses to authors like Rameau, Grimm, and Raynal, and a unique feature of this edition is the inclusion of writings by these authors to help establish the historical and ideological context of Rousseau's writings and the intellectual exchanges of which they are a part.

Two contemporary philosophers take two very different approaches to Jean-Jacques Rousseau's Essay on the Origin of Languages, and then each reflects upon the approach of the other. Barry Stocker takes a deconstructionist approach, discussing the importance of Rousseau in the work of Jacques Derrida. John Bolender approaches Rousseau's Essay in terms of cognitive science, most especially in light of the theories of Noam Chomsky and Alan Page Fiske. Both authors agree that Rousseau's Essay still has much to teach us.