Historians have long debated the nature of the relationships between the Enlightenment and the French Revolution. This study traces a cultural and doctrinal current from the intellectual revolution of the seventeenth century to 1789, arguing that the contribution of the philosophes to this current had a fundamental bearing on the events of the revolutionary decade. How might a state in decline reform, in not transform, its constitution? Two generations of French philosophes struggled to answer this question. Their conclusions took the form of a deistic political theology, according to which...