Quit while you're a head, that's what I say.

I have a living will and I have friends, and I have money and I have hope.

The truth is a fog, in which one man sees the heavenly host and the other one sees a flying elephant.

Lord Vetinari lifted an eyebrow with the care of one who, having found a piece of caterpillar in his salad, raises the rest of the lettuce.

You get all sorts of people in the library, and the librarian gets it all.

It cannot be said often enough that science fiction as a genre is incredibly educational - and I'm speaking the written science fiction, not 'Star Trek.' Science fiction writers tend to fill their books if they're clever with little bits of interesting stuff and real stuff.

The trouble with life was that you didn’t get a chance to practice before doing it for real.