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.

Susan says, don't get afraid, get angry.

And, as always happens, and happens far too soon, the strange and wonderful becomes a memory and a memory becomes a dream. Tomorrow it's gone.

Tiffany knew what the problem was immediately. She'd seen it before, at birthday parties. Her brother was suffering from tragic sweet deprivation. Yes, he was surrounded by sweets. But the moment he took any sweet at all, said his sugar-addled brain, that meant he was not taking all the rest. And there were so many sweets he'd never be able to eat them all. It was too much to cope with. The only solution was to burst into tears.

He felt as if he had been shipwrecked on the Titanic, but in the nick of time had been rescued. By the Lusitania

If you kept changing the way people saw the world, you ended up changing the way you saw yourself.

Don't stick your nose where someone can pull it off and eat it.