Book excerpt: Sébastien Roch Nicolas Chamfort (1740-1794), whom Nietzsche called the "wittiest of all moralists," is now known for little more than brillian aphorisms that captivated a long line of thinkers, from Stendhal to Cioran, Schopenhauer to Camus. Yet the fascination of Chamfort's life is barely suggested by the fragments of writing that have survived him. In Claude Arnaud's captivating biography, Chamfort the libertine, playwright, journalist, and revolutionary stands revealed as the most telling emblem of his times.