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.

There are times when phrases such as 'totally astonished' just don't do the job. I am of course delighted and honoured and, needless to say, flabbergasted.

Nac Mac Feegle! The Wee Free Men! Nae king! Nae quin! Nae laird! Nae master! We willna' be fooled again!

Writing is the most fun you can have by yourself.

The city's full of people who you just see around.

My name is unpronounceable in your tongue, woman,” it said. “I’ll be the judge of that,” warned Granny, and added, “Don’t call me woman.” “Very well. My name is WxrtHltl-jwlpklz,” said the demon smugly.

'Discworld' is taking something that you know is ridiculous and treating it as if it is serious, to see if something interesting happens when you do so.