If you try and take a cat apart to see how it works, the first thing you have on your hands is a nonworking cat.

Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is.

Arthur Dent: What happens if I press this button? Ford Prefect: I wouldn't- Arthur Dent: Oh. Ford Prefect: What happened? Arthur Dent: A sign lit up, saying 'Please do not press this button again.

Marvin was humming ironically because he hated humans so much.

What does it matter? Science has achieved some wonderful things, of course, but I'd far rather be happy than right any day.

"What's up?" "I don't know," said Marvin, "I've never been there."

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.