“[T]he information acquired through reading must not be stored up in the memory, corresponding to the successive chapters of the book. Rather, each little piece of knowledge thus gained must be treated as if it were a stone to be inserted into a mosaic, so that it finds its proper place among all the other elements that form a general worldview in the reader's mind. Otherwise only a confused jumble of chaotic notions will result from all this reading. That jumble is not merely useless, but it also tends to make the unfortunate possessor of it conceited.”