The iconic libertine Giacomo Casanova (1725-1798) was a storied adventurer through the Enlightenment's shadowy underside. Known as a serial seducer, he was also an aspiring priest, an army officer, a fortune teller, a con man, a violinist, a mathematician, a Masonic master, an entrepreneur, a diplomat, a gambler, and a spy. The first to tell his own story, in his massive autobiography Histoire de Ma Vie, he recorded at least a hundred and twenty love...