Rowan did not spend long deliberating on this aspect, since he understood that everyone that came into this library would spend their time browsing through the books, and when they saw the information they wanted they would 'download' it into their Spirit.
Except for Archmages, even a Rank 9 Mage would find it very difficult to collect more than a hundred books at once when they were inside the Ancient Library. It was well known that the Spirit, hence memory depended on the soul, and only an immortal soul could hold so much information.
There was also the aspect of the sort of books that could be collected, as some books contained far more power and knowledge than some other books, making the strain of acquiring them that much harder, and even an Immortal soul could sometimes spend decades or even millennia trying to digest the knowledge in a single book if that book was special.
