We can no longer buy the highest satisfactions of the individual life at the expense of social injustice. We cannot build our individual ladders to heaven and leave the total human enterprise unredeemed of its excesses and corruptions.
In the task of that redemption the most effective agents will be men who have substituted some new illusions for the abandoned ones. The most important of these illusions is that the collective life of mankind can achieve perfect justice.
It is a very valuable illusion for the moment; for justice cannot be approximated if the hope of its perfect realization does not generate a sublime madness in the soul. Nothing but such madness will do battle with malignant power and ‘spiritual wickedness in high places.’ The illusion is dangerous because it encourages terrible fanaticisms. It must therefore be brought under the control of reason. One can only hope that reason will not destroy it before its work is done. P. 277
--Reinhold Niebuhr, Moral Man and Immoral Society