"In this fascinating study, preeminent historian Marc Fumaroli reveals how an imagined "republic" of ideas and interchange fostered the Italian Renaissance, the Enlightenment, and the French Revolution. He follows exchanges among Petrarch, Erasmus, Descartes, Montaigne, and others from the fifteenth through the eighteenth centuries, through revolutions in culture and society. Via revealing portraits and analysis, Fumaroli traces intellectual currents...