According to the prolific writer Umberto Eco whose personal library held 30,000 books, if one reads one book a day between the ages ten to eighty, that's only 25,000 volumes. There are so many books in print even the most dedicated reader can only scratch the literary surface. As a result, book lovers tend to own far more books than they could ever read. According to statistician Nassim Nicholas Taleb, surrounding ourselves with unread books enriches our lives because they remind us of how much we don't know. According to Taleb, read books are less valuable to us than unread ones.