“Deism” in its own day referred not to a superficial theological doctrine but to a comprehensive intellectual tradition that ranged freely across the terrain we now associate with ethics, political theory, metaphysics, the philosophy of mind, and epistemology. It was an astonishingly coherent and systematic body of thought, closer to a way of being than any particular dogma, and it retained its essential elements over a span of centuries, not decades. In origin and substance, deism was neither British nor Christian, as the conventional view supposes, but largely ancient, pagan, and continental, and it spread in America far beyond the educated elite.”