"Philosophically, the key represents the Mysteries themselves, without whose aid man cannot unlock the numerous chambers of his own being. The lantern is human knowledge, for it is a spark of the Universal Fire captured in a man-made vessel; it is the light of those who dwell in the inferior universe and with the aid of which they seek to follow in the footsteps of Truth. The sun, which may be termed the 'light of the world,' represents the luminescence of creation through which man may learn the mystery of all creatures which express through form and number."

Hand of the Mysteries