“Karel Capek, in his wonderful book on gardens, says that the art of gardening can be reduced to one rule: you put into it more than you take out. The same can be said of the art of libraries. But the libraries of our material world, however great their hunger, can only hoard existing volumes. We know that every book holds within all its possible readings, past, present and future, but its Pythagorean reincarnations, those wonderful forms which depend on readers to come, will not be found on our shelves.”