" About this time I had a dream which both frightened and
encouraged me. It was night in some unknown place, and I was
making slow and painful headway against a mighty wind. Dense fog
was flying along everywhere. I had my hands cupped around a tiny
light which threatened to go out at any moment. Everything
depended on my keeping this little light alive. Suddenly I had the
feeling that something was coming up behind me. I looked back,
and saw a gigantic black figure following me. But at the same
moment I was conscious, in spite of my terror, that I must keep my
little light going through night and wind, regardless of all dangers.
When I awoke I realized at once that the figure was a "specter of the
Brocken," my own shadow on the swirling mists, brought into being
by the little light I was carrying. I knew, too, that this little light was my
consciousness, the only light I have. My own understanding is the
sole treasure I possess, and the greatest. Though infinitely small
and fragile in comparison with the powers of darkness, it is still a
light, my only light. "

― C.G. Jung , Memories, Dreams, Reflections