Æsir (Scand.). The same as Ases, the creative Forces personified. The gods who created the black dwarfs or the Elves of Darkness in Asgard. The divine Æsir, the Ases are the Elves of Light. An allegory bringing together darkness which comes from light, and matter born of spirit.
Source: H.P.Blavatsky - The Theosophical Glossary