“Fantasy is a literature particularly useful for embodying and examining the real difference between good and evil. In an America where our reality may seem degraded to posturing patriotism and self-righteous brutality, imaginative literature continues to question what heroism is, to examine the roots of power, and to offer moral alternatives. Imagination is the instrument of ethics. There are many metaphors beside battle, many choices besides war, and most ways of doing good do not, in fact, involve killing anybody. Fantasy is good at thinking about those other ways.”

This is from a 2004 talk LeGuin? gave at the Children's Literature Breakfast.