The will-to-live becomes the will-to-power. - Reinhold Niebuhr

However much human ingenuity may increase the treasures which nature provides for the satisfaction of human needs, they can never be sufficient to satisfy all human wants; for man, unlike other creatures, is gifted and cursed with an imagination which extends his appetites beyond the requirements of subsistence.

Nothing that is worth doing can be achieved in our lifetime; therefore we must be saved by hope. Nothing which is true or beautiful or good makes complete sense in any immediate context of history; therefore we must be saved by faith. Nothing we do, however virtuous, can be accomplished alone; therefore we must be saved by love.

The consistent optimism of our liberal culture has prevented modern democratic societies both from gauging the perils of freedom accurately and from appreciating democracy fully as the only alternative to injustice and oppression. When this optimism is not qualified to accord with the real and complex facts of human nature and history, there is always a danger that sentimentality will give way to despair and that a too consistent optimism will alternate with a too consistent pessimism.