We all like to congregate at boundary conditions. Where land meets water. Where earth meets air. Where bodies meet mind. Where space meets time. We like to be on one side, and look at the other.

The Encyclopedia Galactica defines a robot as a mechanical apparatus designed to do the work of a man. The marketing division of the Sirius Cybernetics Corporation defines a robot as "Your Plastic Pal Who's Fun to Be With. The Hitchhiker's Guide to the Galaxy defines the marketing devision of the Sirius Cybernetic Corporation as "a bunch of mindless jerks who'll be the first against the wall when the revolution comes.

Fifteen years was a long time to be stranded anywhere, particularly somewhere as mind-boggingly dull as Earth.

The lights went out in his eyes for absolutely the very last time ever.

I don't say that I don't believe in God because that implies that there is a God for me not to believe in.

[The Head of Radio Three] had been ensnared by the Music Director of the college and a Professor of Philosophy. These two were busy explaining to the harassed man that the phrase "too much Mozart" was, given any reasonable definition of those three words, an inherently self-contradictory expression, and that any sentence which contained such a phrase would be thereby rendered meaningless and could not, consequently, be advanced as part of an argument in favour of any given programme-scheduling strategy.

Religion ... has certain ideas at the heart of it which we call sacred or holy or whatever. What it means is, 'Here is an idea or a notion that you're not allowed to say anything bad about; you're just not. Why not? Because you're just not. If someone votes for a party that you don't agree with, you're free to argue about it as much as you like; everybody will have an argument but nobody feels aggrieved by it. ... But on the other hand, if somebody says 'I mustn't move a light switch on a Saturday', you say 'I respect that'.