Eivind (like the Terrible) quoted Sorcery by Terry Pratchett (Discworld, #5)
All is not well within the Unseen University. The endemic politics of the place have …
'This is a robe,’ said Rincewind quickly. ‘And you’d better watch out, because I’m a wizard.’ He took a deep breath. ‘Lay a finger on me, and you’ll make me wish you hadn’t. I warn you.'
— Sorcery by Terry Pratchett, Peter Serafinowicz, Bill Nighy (Narrator), and 1 other (Discworld, #5)