Answer, by Fredric Brown, is a science fiction short story first published in 1954. Since the complete text appears on the Internet in several places, I'm assuming that it's in the public domain.
Dwan Ev ceremoniously soldered the final connection with gold. The eyes of a dozen television cameras watched him and the subether bore throughout the universe a dozen pictures of what he was doing.
He straightened and nodded to Dwar Reyn, then moved to a position beside the switch that would complete the contact when he threw it. The switch that would connect, all at once, all of the monster computing machines of all the populated planets in the universe -- ninety-six billion planets -- into the supercircuit that would connect them all into one supercalculator, one cybernetics machine that would combine all the knowledge of all the galaxies.
Dwar Reyn spoke briefly to the watching and listening trillions. Then after a moment's silence he said, "Now, Dwar Ev."
Dwar Ev threw the switch. There was a mighty hum, the surge of power from ninety-six billion planets. Lights flashed and quieted along the miles-long panel.
Dwar Ev stepped back and drew a deep breath. "The honor of asking the first question is yours, Dwar Reyn."
"Thank you," said Dwar Reyn. "It shall be a question which no single cybernetics machine has been able to answer."
He turned to face the machine. "Is there a God?"
The mighty voice answered without hesitation, without the clicking of a single relay.
"Yes, now there is a God."
Sudden fear flashed on the face of Dwar Ev. He leaped to grab the switch.
A bolt of lightning from the cloudless sky struck him down and fused the switch shut.
Love Fredric Brown's proem, Imagine.
Imagine ghosts, gods and devils.
Imagine hells and heavens, cities floating in the sky and cities sunken in the sea
Unicorns and centaurs. Witches, warlocks, jinns and banshees.
Angels and harpies. Charms and incantations. Elementals, farmiliars, demons.
Easy to imagine all of those things: mankind has been imagining them for thousands of years.
Imagine spaceships and the future.
Easy to imagine; the future is really coming and there'll be spaceships in it.
Is there then anything that's really hard to imagine?
Of course there is.
Imagine a piece of matter and yourself inside it, yourself, aware, thinking and therefore knowing you exist, able to move that piece of matter that you're in," to make it sleep or wake, make love or walk uphill.
Imagine a universe-infinite or not, as you wish to picture it- with a billion, billion, billion suns in it.
Imagine a blob of mud whirling madly around one of those suns.
Imagine yourself standing on that blob of mud, whirling with it, whirling through time and space to an unknown destination.
Imagine!
Written by Fredric Brown, 1955
