Who'd want a pony when you could have the whole universe? It was far more interesting and you didn't have to muck it out once a week.

If there were such a thing as an inter-city thieving contest, Ankh-Morpork would bring home the trophy and probably everyone’s wallets.

It had a very long pendulum, and the pendulum swung with a slow tick-tock that set his teeth on edge, because it was the the kind of delibrate, annoying ticking that wanted to make it abundantly clear that every tick and every tock was stripping another second off your life.

I think that sick people in Ankh-Morpork generally go to a vet. It's generally a better bet. There's more pressure on a vet to get it right. People say "it was god's will" when granny dies, but they get angry when they lose a cow.

We're dealing here," said Vimes, "With a twisted mind." "Oh, no! You think so?" "Yes." "But... no... you can't be right. Because Nobby was with us all the time." "Not Nobby," said Vimes testily. "Whatever he might do to a dragon, I doubt if he'd make it explode. There's stranger people in this world than Corporal Nobbs, my lad." Carrot's expression slid into a rictus of intrigued horror. "Gosh," he said.

Always face what you fear. Have just enough money, never too much, and some string. Even if it’s not your fault, it’s your responsibility. Witches deal with things. Never stand between two mirrors. Never cackle. Do what you must do. Never lie, but you don’t always have to be honest. Never wish. Especially don’t wish upon a star, which is astronomically stupid. Open your eyes, and then open your eyes again.

Humans had built a world inside the world, which reflected it in pretty much the same way as a drop of water reflected the landscape. And yet ... and yet ... Inside this little world they had taken pains to put all the things you might think they would want to escape from - hatred, fear, tyranny, and so forth. Death was intrigued. They thought they wanted to be taken out of themselves, and every art humans dreamt up took them further in. He was fascinated.