The great thing about being the only species that makes a distinction between right and wrong is that we can make up the rules for ourselves as we go along.

He felt like an old sponge steeped in paraffin and left in the sun to dry.

Anything invented after you’re thirty-five is against the natural order of things

In an infinite Universe anything can happen.

Words used carelessly, as if they did not matter in any serious way, often allowed otherwise well-guarded truths to seep through.

The only thing nicer than a phone that didn't ring all the time (or indeed at all) was six phones that didn't ring all the time (or indeed at all).

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.