There are evidently limits to the achievements of science; and there are irresolvable contradictions both between prosperity and virtue, and between happiness and ``the good life,'' which had not been anticipated in our philosophy.
Reinhold NiebuhrIt is my strong conviction that a realist conception of human nature should be made a servant of an ethic of progressive justice and should not be made into a bastion of conservatism, particularly a conservatism which defends unjust privileges.
Reinhold NiebuhrGod grant me the serenity to accept the things I cannot change, the courage to change the things I can, and the wisdom to know the difference.
Reinhold Niebuhr