Inexhaustible

 This is cute.

Someone describes packing his suitcase for a trip.  Just before closing it, he observes a small corner not yet filled.  He thinks, "Into this little corner I put a guide book, a lamp, a mirror, a microscope, a telescope, a volume of choice poems, several well-written biographies, a package of old letters, a book of songs, a sharp sword and a small library of more than sixty volumes; yet, strange enough to say, all these did not occupy a space of more than three inches long by two inches wide."  "But how could you do it?" "Well, it was all in the packing, I put in my Bible."