Isagoge: An Introductory Discourse on the Nature of Spirits is a book written by Henry Cornelius Agrippa, a renowned 16th-century philosopher, theologian, and occultist. The book is an introduction to the study of spirits and their nature, and it covers a wide range of topics related to this subject, including the different types of spirits, their origins, and their relationship with humans.The book is divided into seven chapters, each of which explores...