From this Marginalia post
It is only now beginning to be borne in on us — very faintly, it must be admitted, very slowly, and very much against our will — that this vision of the world is dangerously inaccurate, and perfectly useless. For it protects our moral high-mindedness at the terrible expense of weakening our grasp of reality. People who shut their eyes to reality simply invite their own destruction, and anyone who insists on remaining in a state of innocence long after that innocence is dead turns himself into a monster.
