“Don't blame you," said Marvin and counted five hundred and ninety-seven thousand million sheep before falling asleep again a second later.”

“The technology involved in making anything invisible is so infinitely complex that nine hundred and ninety-nine billion, nine hundred and ninety-nine million, nine hundred and ninety-nine thousand, nine hundred and ninety-nine times out of a trillion it is much simpler and more effective just to take the thing away and do without it.”

“The first ten million years were the worst," said Marvin, "and the second ten million years, they were the worst too. The third ten million years I didn't enjoy at all. After that I went into a bit of a decline.”

“Will you stop counting!' snarled Zaphod. 'Yes,' said Ford Prefect, 'in three minutes and thirty-five seconds.”

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

“Life,” said Marvin dolefully, “loathe it or ignore it, you can’t like it.”

“You may not instantly see why I bring the subject up, but that is because my mind works so phenomenally fast, and I am at a rough estimate thirty billion times more intelligent than you. Let me give you an example. Think of a number, any number.”“Er, five,” said the mattress.“Wrong,” said Marvin. “You see?”