Bücherflüche / pocket: Protect Your Library the Medieval Way, With Horrifying Book Curses

Medieval scribes protected their work by threatening death, or worse. …

Given the extreme effort that went into creating books, scribes and book owners had a real incentive to protect their work. They used the only power they had: words. At the beginning or the end of books, scribes and book owners would write dramatic curses threatening thieves with pain and suffering if they were to steal or damage these treasures. …

https://getpocket.com/explore/item/how-to-protect-your-library-with-medieval-book-curses

via https://www.univie.ac.at/voeb/blog/?p=50133