Drawing on current research in science and religion, distinguished bioethicist Stephen G. Post provocatively argues that human beings are, by nature, inclined toward a presence in the universe that is higher than their own. In consequence, the institutions of everyday life, such as schools, the workplace, and the public square, are not justified in censoring the spiritual and religious expression that freely arises from the wellspring of the human spirit. Post believes that the privatization of religious expression, coupled with the imposition of a secular monism, is a departure from true liberal democracy in which citizens are free to assert themselves in ways that manifest their full nature. Utilizing research in the neurosciences, psychiatry, the social sciences, and evolutionary psychology, he provides scientific information supporting the idea, familiar to theories of natural law, that religious expression and freedom are essential human goods. Post's perspective privileges no particular religion, but rather asks that adherents to all faiths, including secularism, be allowed to freely express their core values in a civil, respectful, and public manner. Post calls for a recovery of the full meaning of liberal democracy in all domains of public life, so that we might again discover the value of freedom of expression.