Love must be regarded as the final flower and fruit of justice. When it is substituted for justice it degenerates into sentimentality and may become the accomplice of tyranny. Looking at the tragic contemporary scene within this frame of reference, we feel that American Christianity is all too prone to disavow its responsibilities for the preservation of our civilization against the perils of totalitarian aggression. We are well aware of the sins of all the nations, including our own, which have contributed to the chaos of our era. […] Yet we believe the task of defending the rich inheritance of our civilization to be an imperative one, however much we might desire that our social system were more worthy of defense. We believe that the possibility of correcting its faults and extending its gains may be annulled for centuries if this external peril is not resolutely faced.
— Reinhold Niebuhr, in Christianity and Crisis, 10 February 1941
(via One Hand Clapping)