“Embryos are like photograph film," said Mr. Foster waggishly, as he pushed open the second door. "They can only stand red light." And in effect the sultry darkness into which the students now followed him was visible and crimson, like the darkness of closed eyes on a summer's afternoon.”

“We're not afraid of the dark. Our nightmares were born on sultry, summer afternoons.”

“And suddenly solitude fell across his heart like a dusty reflection. He closed his eyes. The dark doors within him opened and he entered. The next performance in the theater of Grenouille's soul was beginning.”

“Light like thin grey soup seeped through the windows. The door opened and Mrs. Dark came in, followed by her sister, who had no head, only the white bone of her spine protruding from her raggedly severed neck.”

“Pleasures are like photographs: in the presence of the person we love, we take only negatives, which we develop later, at home, when we have at our disposal once more our inner dark room, the door of which it is strictly forbidden to open while others are present.”

“The subject dropped, and we sat on in the dusk that was rapidly deepening into night. The door into the hall was open at our backs, and a panel of light from the lamps within was cast out to the terrace. Wandering moths, invisible in the darkness, suddenly became manifest as they fluttered into this illumination, and vanished again as they passed out of it. One moment they were there, living things with life and motion of their own, the next they quite disappeared. How inexplicable that would be, I thought, if one did not know from long familiarity, that light of the appropriate sort and strength is needed to make material objects visible. Philip must have been following precisely the same train of thought, for his voice broke in, carrying it a little further. 'Look at that moth,' he said, 'and even while you look it has gone like a ghost, even as like a ghost it appeared. Light made it visible. And there are other sorts of light, interior psychical light which similarly makes visible the beings which people the darkness of our blindness.' ("Expiation")”