Slightly reworded quote from Steven Brust, I think from "Jhereg", and derivative of the original one about wizards from Tolkien. [ February 12, 2006: Message edited by: Reid M. Pinchback ]
Brust's a talented writer, and not an unimpressive musician. My favorite of his books is probably Cowboy Feng's Space Bar and Grille, though I'm aware that quite a few people really hate it.