""The Spirits of the Planets"" is a book written by Paracelsus, also known as Theophrastus von Hohenheim, a Swiss physician and alchemist from the 16th century. The book delves into the concept of planetary spirits, which are believed to be invisible beings that reside within each planet and influence the world around us. Paracelsus discusses the nature of these spirits, their characteristics, and their effects on the human body and mind. He also...