Beauty doesn't have to be about anything. What's a vase about? What's a sunset or a flower about? What, for that matter, is Mozart's Twenty-third Piano Concerto about?

I've come up with a set of rules that describe our reactions to technologies: 1. Anything that is in the world when you’re born is normal and ordinary and is just a natural part of the way the world works. 2. Anything that's invented between when you’re fifteen and thirty-five is new and exciting and revolutionary and you can probably get a career in it. 3. Anything invented after you're thirty-five is against the natural order of things.

Why should I want to make anything up? Life's bad enough as it is without wanting to invent any more of it.

It is a well-known fact that those people who must want to rule people are, ipso facto, those least suited to do it... anyone who is capable of getting themselves made President should on no account be allowed to do the job.

The Guide is definitive. Reality is frequently inaccurate.

It's good to leave your room super-messy when you're away. Whoever tries to break into your room will thought it has already been ransacked.

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.