Thus I rediscovered what writers have always known (and have told us again and again): books always speak of other books, and every story tells a sto… - Umberto Eco

A philosophy does not play its role as an actor during a recital; it interacts with other philosophies and with other facts, and it cannot know the results of the interaction between itself and other world visions. World visions can conceive of everything, except alternative world visions, if not in order to criticize them and to show their inconsistency. Affected as they are by a constitutive solipsism, philosophies can say everything about the world they design and very little about the world they help to construct.

Until 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 treasure of secrets emanated by many minds, surviving the death of those who had produced them or had been their conveyors.

Machines, he said, are an effect of art, which is nature’s ape, and they reproduce not its forms but the operation itself.