Given the division of the world into a capitalist camp and a proletarian camp, an imperialist camp and a revolutionary camp, whom is the writer writing for? Answer: he writes for the one side and the other. Every book—not only of literature, and even if “addressed” to someone—is read by its addressees and by its enemies. It is perfectly possible that the enemies might learn more from it than the addressees.
– Italo Calvino, “Whom Do We Write For? or The Hypothetical Bookshelf,” The Uses of Literature: Essays (1980)