Book excerpt: The first people in the world to call themselves 'liberals' were New England Christians in the early republic, for whom being liberal meant being receptive to a range of beliefs and values. The story begins in the mid-eighteenth century, when the first Boston liberals brought the Enlightenment into Reformation Christianity, tying equality and liberty to the human soul at the same moment these root concepts were being tied to democracy. The nineteenth century saw the development of a robust liberal intellectual culture in America, built on open-minded pursuit of truth and acceptance of human diversity. By the twentieth century, what had begun in Boston as a narrow, patrician democracy transformed into a religion of democracy in which the new liberals of modern America believed that where different viewpoints overlap, common truth is revealed. The core American principles of liberty and equality were never free from religion but full of religion.