Go, and you may never return to the magic realm. For even now the great dome of invisibility grows over our world to protect its sanctity for all time. And no one on the outside may enter its boundaries, save for the length of a dream, or a flash of an inspiration. But it will stay, through the years and the centuries and the ages, a part of man for all time. And whenever man needs magic, we will be here.

-Carolinus, Flight of Dragons 1982