People were stupid, sometimes. They thought the Library was a dangerous place because of all the magical books, which was true enough, but what made it really one of the most dangerous places there could ever be was the simple fact that it was a library.

I grow as many of our vegetables as I can, because my granddad was a professional gardener, and it's in the blood.

The universe clearly operates for the benefit of humanity. This can be readily seen from the convenient way the sun comes up in the morning, when people are ready to start the day.

Any sensible ruler would have killed off Leonard, and Lord Vetinari was extremely sensible and often wondered why he had not done so. He'd decided that it was because, imprisoned in the priceless, inquiring amber of Leonard's massive mind, underneath that bright investigative genius was a kind of willful innocence that might in lesser men be called stupidity. It was the seat and soul of that force which, down the millennia, had caused mankind to stick its fingers in the electric light socket of the Universe and play with the switch to see what happened - and then be very surprised when it did.

Sometimes glass glitters more than diamonds because it has more to prove.

It is true that words have power, and one of the things they are able to do is get out of someone’s mouth before the speaker has the chance to stop them.

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