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"Others, going about it in the opposite way, thought the first thing to do was eliminate all worthless books. They would invade the hexagons, show
credentials that were not always false, leaf disgustedly through a volume and condemn entire walls of books. It is to their hygienic, ascetic rage that we lay the senseless loss of millions of volumes. Their name is execrated today, but those who grieve over the "treasures" destroyed in that frenzy overlook two widely acknowledged facts: One, that the Library is so huge that
any reduction by human hands must be infinitesimal. And two, that each book is unique and irreplaceable, but (since the Library is total) there are always several hundred thousand imperfect facsimiles - books that differ by
no more than a single letter, or a comma. "