The census of American libraries spans a wonderful diversity of institutions, from modest municipal book rooms and mobile libraries to the grand collections of such hallowed places as the Morgan, the Folger, the Huntington, and the Smithsonian. Surveys of library users reveal a passionate attachment to these institutions, one that is voiced in very human terms. The word love is an emotion often expressed toward libraries, and not just for National Library Week. Libraries are places in which people are born—as authors, readers, scholars, and activists. (Think Eudora Welty, Zadie Smith, John Updike, and Ian Rankin.)