The Greek virgin goddess of wisdom, particularly in the arts, of war as of peace, happily called by Ruskin the "'Queen of the Air,' in the heavens, in the earth, and in the heart"; is said to have been the conception of Metis, to have issued full-armed from the brain of Zeus, and in this way the child of both wisdom and power; wears a helmet, and bears on her left arm the ægis with the Medusa's head; the olive among trees, and the owl among animals, were sacred to her.