Today's globalizing communications networks draw their origins from the Réseaux de l'esprit of the Ancien Régime which united academies, men of letters, literary societies and intellectuals, and which are the subject of the sixteen articles in this collection of proceedings from the Colloque internationale de Coppet. Through epistolary exchange, the circulation of printed materials, political editorials, journalism, travels, and literary circles, the intellectual links of the networks of the mind legitimized and empowered the culture of modernity and egalitarian ideals of early-modern urban Europe. French text.