Culturally, modernity is characterized by “value pluralism,” which entails the privatization of religious institutions and religious claims. . . Politically, modernity is shaped by “liberalism,” the political system dedicated to the one proposition that political systems must not be dedicated to one proposition. Though it has roots in the patristic period, Christianity in its more developed form is the Church’s adjustment of the gospel to modernity, and the Church’s consequent acceptance of the world’s definition of who we are and what we should be up to.
Peter Leithart, Against Christianity, 17.