Another priest said,"Is it true you've said you'll believe in any god whose existence can be proved by logical debate?""Yes."Vimes had a feeling about the immediate future and took a few steps away from Dorfl."But the gods plainly do exist," said a priest."It Is Not Evident."A bolt of lightning lanced down through the clouds and hit Dorfl's helmet. There was a sheet of flame and then a trickling noise. Dorfl's molten armour formed puddles around his white-hot feet."I Don't Call That Much Of An Argument," said Dorfl calmly, from somewhere in the clouds of smoke.

What do you call those things at the bottom of rivers? Frogs? Stones? Unsuccessful gangsters?

The Librarian considered matters for a while. So…a dwarf and a troll. He preferred both species to humans. For one thing, neither of them were great readers. The Librarian was, of course, very much in favor of reading in general, but readers in particular got on his nerves. There was something, well, sacrilegious about the way they kept taking books off the shelves and wearing out the words by reading them. He liked people who loved and respected books, and the best way to do that, in the Librarian’s opinion, was to leave them on the shelves where Nature intended them to be.

All the higher life forms scythed away, just like that. [ . . . ] Nothing but dust and fundamentalists.

We are monkeys. We like to chatter. Chattering doesn't cost us anything.

[Y]ou weren't born with a talent for witchcraft: it didn't come easily; you worked hard at it because you wanted it. You forced the world to give it to you, no matter the price, and the price is and always will be high... People say you don't find witchcraft; witchcraft finds you. But you've found it, even if at the time you didn't know what it was you were finding, and you grabbed it by its scrawny neck and made it work for you.

You can't inspire people with facts. They need a cause. They need a symbol.