I believe that maturity is not an outgrowing, but a growing up: that an adult is not a dead child, but a child who survived. I believe that all the best faculties of a mature human being exist in the child, and that if these faculties are encouraged in youth they will act well and wisely in the adult... I believe that one of the most deeply human, and humane, of these faculties is the power of imagination: so that it is our pleasant duty, as librarians, or teachers, or parents, or writers, or simply as grown-ups, to encourage that faculty of imagination in our children...And never, under any circumstances, to squelch it, or sneer at it, or imply that it is childish, ... or untrue.

For fantasy is true, of course. It isn't factual, but it is true. Children know that. Adults know it, too, and that is precisely why many of them are afraid of fantasy. They know that its truth challenges, even threatens, all that is false, all that is phony, unnecessary, and trivial in the life they have let themselves be forced into living. They are afraid of dragons because they are afraid of freedom.
~ Ursula K. Le Guin in THE LANGUAGE OF THE NIGHT: ESSAYS ON WRITING, SCIENCE FICTION, AND FANTASY