As Roger Sale has wryly observed, “everyone knows what children's literature is until asked to define it” (1). The Reasons WHY this unruly subject is so hard to delimit have been well canvassed. If we define it as literature read by young people, any text could potentially count as children's literature, including Dickens novels and pornography. That seems too broad, just as defining children's literature as anything that appears on a publisher-designated children's or “young adult” list seems too narrow, since it would exclude titles that appeared before eighteenth-century booksellers such as John Newbery set up shop, including the Aesopica, chapbooks, and conduct books. As numerous critics have noted, we cannot simply say that children's literature consists of literature written for children, since many famous examples—Huckleberry Finn, Peter Pan, The Little Prince—aimed to attract mixed audiences. And, in any case, “children's literature is always written for both children and adults; to be published it needs to please at least some adults” (Clark 96). We might say that children's literature comprises texts addressed to children (among others) by authors who conceptualize young people as a distinct audience, one that requires a form of literature different in kind from that aimed at adults. Yet basing a definition on authorial intention seems problematic. Many famous children's writers have explicitly rejected the idea that they were writing for a particular age group, and many books that were not written with young people in mind have nevertheless had their status as children's or young adult literature thrust upon them, either by publishers or by readers (or both).