If I want to read something that's really giving me something serious and fundamental to think about, about the human condition, if you like, or what we're all doing here, or what's going on, then I'd rather read something by a scientist in the life sciences, like Richard Dawkins, for instance.

I love to keep poking and prodding at it. I’ve thought about it so much over the years that that fascination is bound to spill over into my writing.

If the Universe came to an end every time there was some uncertainty about what had happened in it, it would never have got beyond the first picosecond. And many of course don't. It's like a human body, you see. A few cuts and bruises here and there don't hurt it. Not even major surgery if it's done properly. Paradoxes are just the scar tissue. Time and space heal themselves up around them and people simply remember a version of events which makes as much sense as they require it to make.

The available worlds looked pretty grim. They had little to offer him because he had little to offer them. He had been extremely chastened to realize that although he originally came from a world which had cars and computers and ballet and Armagnac, he didn't, by himself, know how any of it worked. He couldn't do it. Left to his own devices he couldn't build a toaster. He could just about make a sandwich and that was it.

Ford carried on counting quietly. This is about the most aggressive thing you can do to a computer, the equivalent of going up to a human being and saying "Blood...blood...blood...blood...

A nerd is someone who uses a telephone to talk to other people about telephones.

We are stuck with technology when what we really want is just stuff that works.