"The devil is no fool. He can get people feeling about heaven the way they ought to feel about hell. He can make them fear the means of grace the way they do not fear sin. And he does so, not by light but by obscurity, not by realities but by shadows; not by clarity and substance, but by dreams and the creatures of psychosis. And men are so poor in intellect that a few cold chills down their spine will be enough to keep them from ever finding out the truth about everything. The devil does rob us of clarity by casting us about in shadows. But he fools us into thinking that the shadows are light. Our illumination is only illusory."
Via Elizabeth Scalia.