Anatomy of Melancholy, 186: Pt. I, Sec. 2, Mem. I, Subsect. 2: A Digression of the Nature of Spirits, Bad Angels, or Devils, and how they cause Melancholy

  This is what air looks like according to Paracelsus, a 16th century Swiss  physician, astrologer, and alchemist. From the Anatomy of Melancholy: The air is not so full of flies in summer, as it is at all times of invisible devils. Yes, I am still stuck in Pt. I, Sec. 2, Mem. I, Subsect. 2: […]