There are no inconsistencies in the Discworld books; ocassionally, however, there are alternate pasts.

You know how to pray, don’t you? Just put your hands together and hope.

(About a cookbook...) - What about this one? Maids of Honor? - Weeelll, they starts OUT as Maids of Honor...but they ends up Tarts.

It wasn't that Nanny Ogg sang badly. It was just that she could hit notes which, when amplified by a tin bath half full of water, ceased to be sound and became some sort of invasive presence.

You can't go around building a better world for people. Only people can build a better world for people. Otherwise it's just a cage. Besides you don't build a better world by choppin' heads off and giving decent girls away to frogs.

HOROSCOPE: Today is a good time for making new friends. A good deed may have unforeseen consequences. Don’t upset any druids. You will soon be going on a very strange journey. Your lucky food is small cucumbers. People pointing knives at you are probably up to no good. PS, we really mean it about the druids.

Education had been easy. Learning things had been harder.