The Arbatel De Magia veterum (Arbatel: Of the Magic of the Ancients) was a Latin grimoire (book of magic) of renaissance ceremonial magic published in 1575 in Switzerland. The author remains unknown, but authorship may possibly be attributed to the French physician and alchemist Jacques Gohory (1520-1576), one of the first apologists and defenders of medical theory as defined by the Swiss German physician, alchemist, astrologer, and general occultist Paracelsus (11 November or 17 December 1493 – 24 September 1541).  The Arbatel deals with the positive relationship between humanity and celestial hierarchies, unlike other grimoires from the period, the Arbatel encourages the reader to remain active in their community (instead of isolating themselves), favoring kindness, charity, and honesty over remote and obscure rituals. The book influenced the English Paracelsian physician, astrologer, mathematician, and cosmologist Robert Fludd in his theories of cosmic harmony.