[Walt] Whitman and [humanist educator John] Dewey tried to substitute hope for knowledge. They wanted to put shared utopian dreams - dreams of an ideally decent and civilized society - in the place of knowledge of God's Will, Moral Law, the Laws of History, or the Facts of Science.... As long as we have a functioning political left, we still have a chance to achieve our country, to make it the country of Whitman's and Dewey's dreams.