" 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. "

― Reinhold Niebuhr , The Children of Light and the Children of Darkness: A Vindication of Democracy and a Critique of its Traditional Defense