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• There must be some mistake," he said, "are you not a greater computer than the Milliard Gargantubrain which can count all the atoms in a star in a millisecond?
  "The Milliard Gargantubrain?" said Deep Thought with unconcealed contempt....
• So we're not home and dry," he said. "We could not even be said," replied Ford, "to be home and vigorously towelling ourselves off.
  -- The Hitch Hiker's Guide to the Galaxy...
• Not only is "The Hitchhiker's Guide to the Galaxy" a wholly remarkable book
  it is also a highly successful one - more popular than the "Celestial Home Care Omnibus", better selling than "Fifty-three More Things to Do in Zero Gravity", and more controversial than Oolon Colluphid's trilogy of philosophical blockbusters, "Where God Went Wrong", "Some More of God's Greatest Mistakes" and "Who Is This God Person Anyway?...
• You think you've got problems," said Marvin, the paranoid human-hating robot, as if he was addressing a newly occupied coffin, "what are you supposed to do if you ARE a manically depressed robot?
  No, don't bother to answer that, I'm fifty thousand times more intelligent than you and even I don't know the answer....
• 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....
• Life," he said, "is like a grapefruit." "Er, how so?
  "Well, it's sort of orangy-yellow and dimpled on the outside, wet and squidgy in the middle....
• It seemed to me," said Wonko the Sane, "that any civilization that had so far lost its head as to need to include a set of detailed instructions for use in a package of toothpick
  was no longer a civilization in which I could live and stay sane....
• I managed to say, "Sorry," and no more. I knew that he disliked me to cry.
  This time he said, watching me, "On some occasions it is better to weep....
• He started to count to ten. He was desperately worried that one day sentient life forms would forget how to do this.
  Only by counting could humans demonstrate their independence of computers....