Marquis de Sade and the Enlightenment We are no guiltier in following the primitive impulses that govern us than is the Nile for her flood or the sea for her waves" - La Mettrie The eighteenth century embraced a secularized France in which the idea of utility, and not of salvation, were the principles by which one lived. Nature and reason in many ways replaced God. What this change left however, was a vacuum for the motive of morality in society. What would compel men to behave if not an omnipresent and all-powering God? The utilitarian ide ....