[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.
Richard RortyPhilosophy makes progress not by becoming more rigorous but by becoming more imaginative.
Richard Rorty