Letizia Alarez de Toledo has observed that the vast Library is pointless, strictly speaking, all that is required is a single volume, of the common size, printed in nine or ten-point type, that would consist of an infinite number of infinitely thin pages. (In the early seventeenth century, Cavalieri stated that every solid body is the super-imposition of an infinite number of planes.) Using that silken vademucum would not be easy; each apparent page would open into another similar page; the inconceivable middle page would have no back.”

–Jorge Luis Borges, footnote in “The Library of Babel”