This is the other variety of significance that attaches to books, the subjective sort, which transforms them into talismans. Many books are read but some books are lived, so that words and ideas lose their ethereality and become experiences, turning points in an insufficiently clarified existence, and thereby acquire the almost mystical (but also fallible) intimacy of memory. In this sense one’s books are one’s biography. […]

And a book is more than a text: even if every book in my library is on Google Books, my library is not on Google Books. A library has a personality, a temperament. (Sometimes a dull one.) Its books show the scars of use and the wear of need. They are defaced—no, ornamented—by markings and notes and private symbols of assent and dissent, and these vandalisms are traces of the excitations of thought and feeling, which is why they are delightful to discover in old books: they introduce a person. There is something inhuman about the pristinity of digital publication. It lacks fingerprints. But the copy of a book that is on my shelf is my copy. It is unlike any other copy, it has been individuated; and even those books that I have not yet opened—unread books are an essential element of a library—were acquired for the further cultivation of a particular admixture of interests and beliefs, and every one of them will have its hour. The knowledge that qualifies one to be one’s own librarian is partly self-knowledge. The richness, or the incoherence, of a library is the richness, or the incoherence, of the self.

Leon Wieseltier, “Voluminous”