A book exists at the intersection of the author’s subconscious and the reader’s response. An author’s career exists in the same way. A writer worries away at a jumble of thoughts, building them into a device that communicates, but the writer doesn’t know what’s been communicated until it’s possible to see it communicated.

William Gibson. Reminds me of Umberto Eco:

I always assume that a good book is more intelligent than its author. It can say things that the writer is not aware of.

And Montaigne:

An able reader often discovers in other men’s writings perfections beyond those that the author put in or perceived, and lends them richer meanings and aspects.