A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.

Zaphod did not want to tangle with them and, deciding that just as discretion is the better part of valor, so was cowardice is the better part of discretion, he valiantly hid himself in a closet.

We all like to congregate at boundary conditions. Where land meets water. Where earth meets air. Where bodies meet mind. Where space meets time. We like to be on one side, and look at the other.

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.

... The truth of the matter is, that most English people don't know how to make tea anymore either, and most people drink cheap instant coffee instead, which is a pity, and gives Americans the impression that the English are just generally clueless about hot stimulants.

They live in perpetual fear of the time they call "The Coming of the Great White Handkerchief

And wow! Hey! What's this thing coming towards me very fast? Very very fast. So big and flat and round, it needs a big wide sounding word like... ow... ound... round... ground! That's it! That's a good name - ground! I wonder if it will be friends with me?