The Structure and Dynamics of the Psyche (Collected Works of C.G. Jung, Volume 8)
“I have allowed myself to dwell at some length on Paracelsus and to cite a number of authentic texts, because I wanted to give the reader a rough idea of the way in which this author conceives the lumen naturae.
It strikes me as signiﬁcant, particularly in regard to our hypothesis of a multiple consciousness and its phenomena, that the characteristic alchemical vision of sparks scintillating in the blackness of the arcane substance should, for Paracelsus, change into the spectacle of the “interior ﬁrmament” and its stars.
He beholds the darksome psyche as a star-strewn night sky, whose planets and ﬁxed constellations represent the archetypes in all their luminosity and numinosity.
The starry vault of heaven is in truth the open book of cosmic projection, in which are reﬂected the mythologems, i.e., the archetypes. In this vision astrology and alchemy, the two classical functionaries of the psychology of the collective unconscious, join hands. Carl Jung, CW 8, The Structure and Dynamics of the Psyche, Page 195, Para 392.