Who knew what evil lurked in the hearts of men? A copper, that's who. (...)You saw how close men lived to the beast. You realized that people like Carcer were not mad. They were incredibily sane. They were simply men without a shield. They'd looked at the world and realized that all the rules didn't have to apply to them, not if they didn't want them to. They weren't fooled by all the little stories. They shook hands with the beast.

Inside every sane person there's a madman struggling to get out," said the shopkeeper. "That's what I've always thought. No one goes mad quicker than a totally sane person.

Grinning like a necrophiliac in a morgue.

Words are the litmus paper of the minds. If you find yourself in the power of someone who will use the word "commence" in cold blood, go somewhere else very quickly. But if they say "Enter", don't stop to pack.

I've often felt depressed; everyone feels depressed.

Rincewind could scream for mercy in nineteen languages, and just scream in another forty-four.

I wrote three books, I had three greenhouses. It seemed to me to be very satisfactory.