One of the things Ford Prefect had always found hardest to understand about humans was their habit of continually stating and repeating the very very obvious.

Beethoven tells you what it's like to be Beethoven and Mozart tells you what it's like to be human. Bach tells you what it's like to be the universe.

I refuse to answer that question on the grounds that I don't know the answer

The idea that Bill Gates (one of the founders of Microsoft) has appeared like a knight in shining armour to lead all customers out of a mire of technological chaos neatly ignores the fact that it was he, by peddling second rate technology, led them into it in the first place...

This planet has — or rather had — a problem, which was this: most of the people living on it were unhappy for pretty much all of the time.

Even the evil-looking bird perched on a rod in the bar had stopped screeching out the names and addresses of local contract killers, which was a service it provided for free.

Trillian had come to suspect that the main reason [Zaphood] had had such a wild and successful life was that he never really understood the significance of anything he did.