"Paleontology and archaeology and other skulduggery were not subjects that interested wizards. Things are buried for a reason, they considered. There's no point in wondering what it was. Don't go digging things up in case they won't let you bury them again." The Last Continent, p. 18.

"It sounded as though the unseen voice then began to chant very quietly through an unseen nose.
"Rincewind was, after all, a wizard. Not a good one, but he was sensitive to magic. And the chant was doing strange things.
"The hairs on the back of his hands tried to crawl up his arms, and the back of his neck began to sweat. His ears popped and, very gently, the landscape began to spin around him." The Last Continent, pp. 58-59.

" 'It's your fault. You arrived here and suddenly things had always been wrong.'
"Rincewind looked back towards the wall. The...