If you read history you will find that the Christians who did most for the present world were precisely those who thought most of the next. It is since Christians have largely ceased to think of the other world that they have become so ineffective in this.
C. S. LewisThe fundamental laws are in the long run merely statements that every event is itself and not some different event.
C. S. LewisThe Christian has a great advantage over other men, not by being less fallen than they, nor less doomed to live in a fallen world, but by knowing that he is a fallen man in a fallen world.
C. S. LewisThe road to the promised land runs past Sinai. The moral law may exist to be transcended: but there is no transcending it for those who have not first admitted its claims up on them, and then tried with all their strength to meet that claim, and fairly and squarely faced the fact of their failure.
C. S. Lewis