The moon is a rock.
But it's also Selene, Artemis, Diana, Isis, the lunar deities; an eldritch clock by which we measure our growth and fertility; home of an old man in the West and a rabbit in the East; the site of countless imaginary voyages; a long-believed trigger of lunacy (luna...see?). It's another world, close enough to our to peer down at us; to it, we compose sonatas. It can be blue, made of cheese, a harvest moon; we've long fantasized about its dark side, perhaps dotted with black monoliths or inhabited by flying men.
The moon is a totem of great importance in all religions…