The library is a difficult room to flirt in — it is quiet, everyone is concentrating, and any line has to survive being whispered. This is our collection of library pick up lines, ranked by reader votes, built around books, shelves, silence, overdue returns and the Dewey Decimal system. They suit students, librarians and anyone who spends more time in the stacks than is strictly healthy. The best of them are short, because you cannot deliver a long joke at a whisper. A few are filthy, which in a silent reading room is either very funny or very unwise.