Reinhold Niebuhr The Irony of American History:
There are no simple congruities in life or history. The cult of happiness erroneously assumes them. It is possible to soften the incongruities of life endlessly by the scientific conquest of nature’s caprices, and the social and political triumph over historic injustice. But all such strategies cannot finally overcome the fragmentary character of human existence. The final wisdom of life requires, not the annulment of incongruity but the achievement of serenity within and above it…
Nothing worth doing is completed in our lifetime; therefore, we are saved by hope. Nothing true or beautiful or good makes complete sense in any immediate context of history; therefore, we are saved by faith. Nothing we do, however virtuous, can be accomplished alone; therefore, we are saved by love. No virtuous act is quite as virtuous from the standpoint of our friend or foe as from our own; therefore, we are saved by the final form of love, which is forgiveness.
Behind the Scenes with Mark 