Intellectual History and the Causes of the French RevolutionFrom the outbreak of the French Revolution in 1789, historians, politicians, and even the interested public believed radical ideas to be at the bottom of this upheaval. Upstaged by social explanations, particularly in the first two-thirds of the twentieth century, intellectual accounts have regained prominence, as recent scholarship has reiterated that ideas mattered. But what ideas? This essay focuses on those ideas that became evident at and around the outbreak of the revolution in 1788–89.