From another direction he felt the sensation of being a sheep startled by a flying saucer, but it was virtually indistinguishable from the feeling of being a sheep startled by anything else it ever encountered, for they were creatures who learned very little on their journey through life, and would be startled to see the sun rising in the morning, and astonished by all the green stuff in the fields.

The Encyclopedia Galactica defines a robot as a mechanical apparatus designed to do the work of a man. The marketing division of the Sirius Cybernetics Corporation defines a robot as "Your Plastic Pal Who's Fun to Be With. The Hitchhiker's Guide to the Galaxy defines the marketing devision of the Sirius Cybernetic Corporation as "a bunch of mindless jerks who'll be the first against the wall when the revolution comes.

It takes an awful lot of time to not write a book.

The books people are writing today, they're too long. You get a little bit of plot, and then pages and pages of Creative Writing. They teach classes in how to do this. They should teach classes in how to stop!

He inched his way up the corridor as if he would rather be yarding his way down it, which was true.

One of the problems of taking things apart and seeing how they work - supposing you're trying to find out how a cat works--you take that cat apart to see how it works, what you've got in your hands is a non-working cat. The cat wasn't a sort of clunky mechanism that was susceptible to our available tools of analysis.

When people you greatly admire appear to be thinking deep thoughts, they probably are thinking about lunch.