We are very fortunate to have nice librarians. Each of my children has left their mark on a library book around the age of two or three. When you take out books as much as we do, you come to realize your chances of having to reimburse the library are very high. I don't mind, considering how much I save from borrowing books rather than buying them. Each time I've replaced the ruined book, except for the one that was out of print. I never could find a copy of it.