Many of literature's greatest works, from ancient myths to the works of Nobel laureates, rely on fantasy. Even when there has been a dominant preference for realism, generation after generation of readers have been drawn to stories of the fantastic not only for what they help us learn about ourselves as individuals and about our collective selves but also for what they show about our social values.
Great literature can be the means of understanding as well as creating our world—by teaching and reinforcing society's laws, articulating its values, and enforcing the social contracts that unite us as a culture. What if literature itself generated our ideas and feelings about justice, marriage and family, property, authority, race, or gender? What if it enflamed our determination to pursue justice—or, conversely, undermined our ability to detect injustice?