This must be Thursday,' said Arthur to himself, sinking low... - Douglas Adams, The Hitchhiker's Guide to the Galaxy

"So this is it,"said Arthur, "We are going to die.""Yes,"said Ford, "except... no! Wait a minute!"He suddenly lunged across the chamber at something behind Arthur's line of vision. "What's this switch?"he cried."What? Where?"cried Arthur, twisting round."No, I was only fooling,"said Ford, "we are going to die after all."

"What's up?"[asked Ford.]I don't know,"said Marvin, "I've never been there."

"For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much—the wheel, New York, wars and so on—whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man—for precisely the same reasons."

"So this is it,"said Arthur, "We are going to die.""Yes,"said Ford, "except... no! Wait a minute!"He suddenly lunged across the chamber at something behind Arthur's line of vision. "What's this switch?"he cried."What? Where?"cried Arthur, twisting round."No, I was only fooling,"said Ford, "we are going to die after all."

"We demand rigidly defined areas of doubt and uncertainty!"