He is the author of The Specter of Skepticism in the Age of Enlightenment. Dan Edelstein is the William H. Bonsall Professor of French and a professor of history (by courtesy) at Stanford University. He is the author of The Terror of Natural Right: Republicanism, the Cult of Nature, and the French Revolution and The Enlightenment: A Genealogy. Together, they are the editors of Let There Be Enlightenment: The Religious and Mystical Sources of Rationality.