A big library holds a kind of strange faux-infinity, spanning across hundreds of topics with voices from millions of authors. Good libraries can contain in their finite space a feeling that, even if you read for centuries and centuries, you would never exhaust the knowledge contained within their walls, not only because there are simply so many books, but because there’s so much to learn when you take the ideas from one book as a lens through which to read others. Infinities assembled out o...