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.
Jean-Jacques Rousseau (1712–1778) was one of the leading figures of the French Enlightenment. The author of popular novels such as Emile, or On Education (1762), he achieved immortality with the publication of philosophical treatises such as The Social Contract (1762) and A Discourse on Inequality (1754). His ideas would serve as the bedrock for leaders of both the American and French Revolutions.