Books. They are lined up on shelves or stacked on a table. There they are wrapped up in there jackets, lines of neat print on nicely bound pages. They look like such orderly, static things. Then you, the reader come along. You open the book jacket, and it can be like opening the gates to an unknown city, or opening the lid of a treasure chest. You read the first word and you're off on a journy of exploration and discovery.
We can imagine the books we'd like to read, even if they have not yet been written, and we can imagine libraries full of books we would like to possess, even if they are well beyond our reacher, because we enjoy dreaming up a library that reflects every one of our interests and every one of our foibles--a library that, in its variety and complexity, fully reflects the reader we are.