It is known that there are an infinite number of worlds, simply because there is an infinite amount of space for them to be in. However, not every one of them is inhabited. Therefore, there must be a finite number of inhabited worlds. Any finite number divided by infinity is as near to nothing as makes no odds, so the average population of all the planets in the Universe can be said to be zero. From this it follows that the population of the whole Universe is also zero, and that any people you may meet from time to time are merely the products of a deranged imagination.

I'm 48, which is a bit of a shock to me. Why only last year I thought I was a precocious young thing!

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.

He stood up straight and looked the world squarely in the fields and hills. To add weight to his words he stuck the rabbit bone in his hair. He spread his arm out wide. "I will go mad!" he annouced.

ABOYNE (vb.) To beat an expert at a game of skill by playing so appallingly that none of his clever tactics or strategies are of any use to him.

Zaphod felt he was teetering on the edge of madness and wondered if he shouldn't just jump over and have done with it.

Nobody got murdered before lunch. But nobody. People weren't up to it. You needed a good lunch to get both the blood-sugar and blood-lust levels up.