Libraries are sanctuaries from the world and command centers onto it: here in the quiet rooms are the lives of Crazy Horse and Aung San Suu Kyi, the Hundred Years' War and the Opium Wars and the Dirty War, the ideas of Simone Weil and Lao-Tzu, information on building your sailboat or dissolving your marriage, fictional worlds and books to equip the reader to reenter the real world. They are, ideally, places where nothing happens and where everything that has happened is stored up to be remembered and relived, the place where the world is folded up into boxes of paper. Every book is a door that opens onto another world, which might be the magic that all those children's books were alluding to, and a library is a Milky Way of worlds.