This is a brilliant work: vastly original, deeply learned, and urgently needed. For the first time it gives Poulain, little known until recent decades, the full treatment warranted by the philosophical breakthrough he effected. The writing is superb. Stuurman makes dense philosophical arguments accessible without oversimplifying, and has an unusually good sense of what the reader needs to be told as he moves through his presentation. The book will without question assume an important place in Enlightenment scholarship and stimulate debate over the origins of modern liberal social thought.