MTL of the rest of the untranslated part :
Then, the person that they're dealing with is someone who, in the normal course of events, would be using the library without a care in the world forcing them to repurchase books.
Libraries are a very human institution, a system that relies on the goodwill, reason and good sense of its users.
That's why, even if a book gets dirty or lost, there will always be patrons who just ignore it... even in our university library.