QUOTE(Jaeld Alteir @ Nov 14 2005, 04:50 PM)
My vote is for a system like the no teleporting, guards at the door (even if that "guard" is just someone at the front desk) who will lock the door if you have Library books in your possession.
However, in order to cater to the freeform TES world, while it should be DIFFICULT to steal books from the Library, it shouldn't be impossible. Maybe there's another key in the Librarian's office, and if you could steal that and sneak past the guards, you're home free.
And as much as I love assassins, it's probably not really in the Library's spirit of free inquiry to hunt down & kill someone for taking a book...that's why we have copies in the Vault. ;)
In my opinion, if someone would be able to steal one (or more) book/s, he wouldn't be allowed to return to the library without paying fines or fighting.