Douglas Adams

"All right," said Deep Thought. "The Answer to the Great Question..."
"Yes...!"
"Of Life, the Universe and Everything..." said Deep Thought.
"Yes...!"
"Is..." said Deep Thought, and paused.
"Yes...!"
"Is..."
"Yes...!!!...?"
"Forty-two," said Deep Thought, with infinite majesty and calm.

The Hitchhiker’s Guide to the Galaxy
by Douglas Adams
Picador, London, 2002 [first published in 1979]
Page 152