Here are the eighteenth-century publicists and propagandists, the founders and extenders of political science, economics, sociology, ethnology, anthropology, and psychology. Frederick B. Artz emphasizes the practice as well as practical humanism of the Philosophes and examines their fascination with science, their gregarious, worldly, unalienated zest for life, and, finally, their enormous curiosity, whose breadth and vitality must have given their critics pause.