From the introduction:
Quilt of Yarns is an informal storytelling game with elements of role-playing and bibliomancy. Ironically, it is played with a stack of books. To begin, each player takes a book, turns to a random page, selects a passage from that page (one or two sentences or a particularly distinctive phrase), and writes that phrase on a scrap of paper.
Game play requires access to a variety of books - nearly any sort with words will work.