“A book is a companion, though. You can read it in a special place, like on a train to Amsterdam, then you carry it home and you chuck it on a shelf, and then years later you remember that feeling you had on the train when you were young. It’s like a little island in time. If you love the book, you can give it to someone else. And you can discover it over and over, and it’s like seeing an old friend. Can’t do that with a digital file.”