I, too, feel the need to reread the books I have already read, " a third reader says, "but at every rereading I seem to be reading a new book, for the first time. Is it I who keep changing and seeing new things of which I was not previously aware? Or is reading a construction that assumes form, assembling a great number of variables, and therefore something that cannot be repeated twice according to the same pattern? Every time I seek to relive the emotion of a previous reading, I experience different and unexpected impressions, and do not find again those of before. At certain moments it seems to me that between on reading and the next there is a progression: in the sense, for example, of penetrating further in the spirit of the text, or of increasing my critical detachment. At other moments, on the contrary, I seem to retain the memory of the readings of a single book one next to another, enthusiastic or cold or hostile, scattered in time without a perspective, without a thread that ties them together.-- (Calvino, 255)