“Only by counting could humans demonstrate their independence of computers.”

“Ford carried on counting quietly. This is about the most aggressive thing you can do to a computer, the equivalent of going up to a human being and saying "Blood...blood...blood...blood...”

“I really didn't foresee the Internet. But then, neither did the computer industry. Not that that tells us very much of course--the computer industry didn't even foresee that the century was going to end.”

“For seven and a half million years, Deep Thought computed and calculated, and in the end announced that the answer was in fact 42- and so another, even bigger, computer had to be built to find out what the actual question was.”

“The Googleplex Star Thinker is a super-computer from the Seventh Galaxy of Light and Ingenuity and has the ability to calculate the trajectory of every single dust particle during a five-week Dangrabad Beta sand blizzard.The Deep Thought computer call it a pocket calculator in comparison to itself.”

“Proving nothing," said Ford. "I wouldn't trust that computer to speak my weight.""I can do that for you, sure," enthused the computer, punching out more ticker tape. "I can even work out your personality problems to ten decimal places if it will help.”

“Simple. I got very bored and depressed, so I went and plugged myself in to its external computer feed. I talked to the computer at great length and explained my view of the Universe to it," said Marvin."And what happened?" pressed Ford."It committed suicide," said Marvin and stalked off back to the Heart of Gold.”