The rise and fall of early free-thinking societies in America offers a picture of considerable interest. The background is that of eighteenth-century deism—with the neutral tints of unbelief; the high lights are furnished by the fires of the French Revolution, the shadows by the dark fires of reaction. Across this canvas march many figures—rationalists like Franklin and Washington, ardent innovators like Jefferson, and a host of lesser characters—Frenchmen like Genêt and his Jacobins, Anglo-Americans like Paine and Houston, plain Americans like Elihu Palmer, with his Principles of Nature, English reformers like Robert Owen and his sons with their liberalizing communism; and ever opposing this army of radicals, the conservative elements—heads of colleges, leaders of the bar, and, as particular defenders of the faith, the clergy of New England.