if Truth is objective, if we live in a world we did not create and cannot change merely by thinking, if the world is not really a dream of our own, then the most destructive belief we could possibly bleieve would be the denial of this primary fact. It would be like closing your eyes while driving, or blissfully ignoring the doctor’s warnings.
– C.S. Lewis, “The Poison of Subjectivsim” in Christian Reflections