Dreams

I have had a serious dream, I dreamt of a comet in the sky, all persuasive, unavoidable, resolute in the heavens. I had a dream of a dream, that the world was in an apocalypse, and nothing that pure dread was instilled upon myself, for this comet was, in my dream of a dream, something that would mean the end of civilization. I wonder, what does this mean? I wonder, what are dreams? This dream has given me such a fright as no dream has since I was a child...