I never said nothing..." "I know you never! I could hear you not saying anything! You've got the loudest silences I ever did hear from anyone who wasn't dead!

I thought unicorns were more . . . Fluffy.

I know loads of coppers and dealt with them a lot when I was a journalist - coppers are easy to write for; they tend to run on rails.

If you really want to upset a witch, do her a favor which she has no means of repaying. The unfulfilled obligation will nag at her like a hangnail.

Interesting thing, these fellows never seem to get the idea of perspective-' The Bursar thought, or received the thought: that's because perspective is a lie. If I know a pond is round then why should I draw it oval? I will draw it round because round is true. Why should my brush lie to you just because my eye lies to me?

One day I'll work out what it is you are saying, my lad, and then you'll be in trouble.

Opera happens because a large number of things amazingly fail to go wrong.