Sometimes you say things with a smile with the precise intention of making it clear that you are not being serious, and are only kidding. If I salute a friend with a smile and say, "How are you, you old scoundrel!" clearly I don't really mean he's a scoundrel.
Umberto EcoUntil then I had thought each book spoke of the things, human or divine, that lie outside books. Now I realized that not infrequently books speak of books: it is as if they spoke among themselves. In the light of this reflection, the library seemed all the more disturbing to me. It was then the place of a long, centuries-old murmuring, an imperceptible dialogue between one parchment and another, a living thing, a receptacle of powers not to be ruled by a human mind, a treausre of secrets emanated by many minds, surviving the death of those who had produced them or had been their conveyors.
Umberto Eco