Any wizard bright enough to survive for five minutes was also bright enough to realize that if there was any power in demonology, then it lay with the demons. Using it for your own purposes would be like trying to beat mice to death with a rattlesnake.
Terry PratchettWhen millions of tons of angry elephant come spinning through the sky, and there was no one there to hear it, does it - philosopically speaking - make a noise
Terry Pratchett