"Outside it is day. You have entered, and your eyes are blinded with so much darkness. It penetrates deeply into the pupils of your eyes and hurts. You close your eyes for a moment, until they have adjusted themselves. Both are within you, the darkness and the brightness, they are yours in the depths of you retina, and you can draw them from the same well; which it will be depends on whether you stand in the light or in darkness."

from The Death of the Adversary by Hans Keilson