"There used to be something called God ..."
"It's a subject," he [Mustapha Mond] said, "that has always had a great interest for me." He pulled out a thick black volume. "You've never read this, for example." ...- Aldous Huxley, Brave New World
The Savage took it. "The Holy Bible, containing the Old and New Testaments," he read aloud from the title-page.
"Nor this." It was a small book and had lost its cover.
"The Imitation of Christ."
"Nor this." He handed out another volume.
"The Varieties of Religious Experience. By William James."
"And I've got plenty more," Mustapha Mond continued, resuming his seat. "A whole collection of pornographic old books." ...
"But if you know about God, why don't you tell them?" asked the Savage indignantly. "Why don't you give them these books about God?"
"For the same reason as we don't give them Othello: they're old; they're about God hundreds of years ago. Not about God now."
"But God doesn't change."
"Men do, though."
"What difference does that make?"
"All the difference in the world," said Mustapha Mond. ...
"Then you think there is no God?"
"No, I think there quite probably is one."
"Then why? ..."
Mustapha Mond checked him. "But he manifests himself in different ways to different men. In premodern times he manifested himself as the being that's described in these books. Now ..."
"How does he manifest himself now?" asked the Savage.
"Well, he manifests himself as an absence; as though he weren't there at all."
"That's your fault."
"Call it the fault of civilization. God isn't compatible with machinery and scientific medicine and universal happiness. You must make your choice. Our civilization has chosen machinery and medicine and happiness. That's why I have to keep these books locked up in the safe. They're smut ..."