Even as rigorous a determinist as Karl Marx, who at times described the social behaviour of the bourgeoisie in terms which suggested a problem in social physics, could subject it at other times to a withering scorn which only the presupposition of moral responsibility could justify.
Reinhold NiebuhrThere has been a religious revival because - let me put it like this, the people that weren't traditionally religious, conventionally religious, had a religion of their own in my youth. These were liberals who believed in the idea of progress or they were Marxists. Both of these secular religions have broken down.
Reinhold Niebuhr