If somebody thinks they're a hedgehog, presumably you just give 'em a mirror and a few pictures of hedgehogs and tell them to sort it out for themselves.

She had what it took: great hair, a profound understanding of strategic lip gloss, the intelligence to understand the world and a tiny secret interior deadness which meant she didn’t care.

Insofar as she recognized at all that she was dreaming, she realized that she must be exploring her subconscious mind. She had heard it said that humans are supposed only to use about a tenth of their brains, and that no one was really clear what the other nine tenths were for, but she had certainly never heard it suggested that they were used for storing penguins.

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.

Marvin started his ironical humming again. Zaphod hit him and he shut up.

There are some people you like immediately, some whom you think you might learn to like in the fullness of time, and some that you simply want to push away from you with a sharp stick.

What do you get if you multiply six by nine?" "Six by nine. Forty two." "That's it. That's all there is." "I always thought something was fundamentally wrong with the universe