A quote,

or rather, a paraphrase. In The Library at Night (I read it in Swedish, Nattens bibliotek), Alberto Manguel writes about libraries. When he writes about how his own private library is organized, he mentions that visitors might think it arbitrary and ask,

"Why sort both my paperbacks of Chapman's Homer under Keats?"

This strikes a chord with me. It makes me want to sort all my Keats, Byron and Shelley books together - not only their poetry but also The Stress of Her Regard, Fevre Dream, The vampyre and The difference engine. And then of course the Shakespeariana (e.g. The Stratford Man, Something rotten, Wyrd sisters & Lords and ladies) next to Will's plays.

And then the subtler connections: Dragons of Babel with L'Écume des Jours by way of Duke Ellington. The Steppenwolf with Goethe and Mozart. Firmin with Wuthering Heights and others of Firmin's favourite books. Matilda with Great Expectations. The Hitchhiker's Guide to the Galaxy with Foundation and Mostly Harmless with Have Space Suit - Will Travel. And so on and so on.

An intertextual bookshelf. It would need to be in many more than three dimensions.