Ah yes... you are Ecthelion. [He knows the elf's story and knows from whence he came, and he knows the trials that led to this moment.]

Yes. The more that is repaired, the better staying here will be. Each good thing done for the Library is not without reward. The books themselves are not the thing that wishes you harm... merely what leaks through into this reality.

Less will break through as you might believe. The real challenge... is when you have to repair internal damage in the books.