Christian political thought has also acquired a secondary value in the circumstances of our time, which may, however, be no less important: it has an apologetic force when addressed to a world where the intelligibility of political institutions and traditions is seriously threatened. Christian theology sheds light on institutions and traditions, to address a crisis that is more pressing on unbelievers than on believers; and so it also offers reasons to believe. In our days it is not religious believers that suffer a crisis of confidence. Believers did suffer a serious one two or three generations ago, and the results of that crisis in small church attendance and the de-Christianizing of institutions are still working themselves out around us. But that crisis was precipitated by the presence of a rival confidence, a massive cultural certainty that united natural science, democratic politics, technology, and colonialism. Today this civilizational ice-shelf has broken up, and though some of the icebergs floating around are huge — natural science and technology, especially, drift on as though nothing has happened — they are not joined together anymore, nor joined to the land. The four great facts of the twentieth century that broke the certainty in pieces were two world wars, the reversal of European colonization, the threat of the nuclear destruction of the human race, and, most recently, the evidence of long-term ecological crisis. The master-narrative that was to have delivered us the crown of civilization has delivered us insuperable dangers. So Western civilization finds itself the heir of political institutions and traditions which it values without any clear idea why, or to what extent, it values them. Faced with decisions about their future development it has no way of telling what counts as improvement and what as subversion. It cannot tell where "straight ahead" lies, let alone whether it ought to keep on going there. The master-narrative has failed; and even its most recent revised edition, announced as "postmodern," which declares the collapse to be the glorious last chapter, and plurality to be the great unifying principle, merely stands to the failure as the angel in the famous Czech joke stands to his own constant failures of prediction: "It's all in the plan! Don't worry! It's all in the plan!"
Oliver O’Donovan “The Ways of Judgment.” xxii