""Notes On The Scientific And Religious Mysteries Of Antiquity: The Gnosis And Secret Schools Of The Middle Ages"" is a book written by John Yarker Jr. and first published in 1872. The book explores the scientific and religious mysteries of the ancient world and the secret schools of the Middle Ages. Yarker Jr. delves into the history and philosophy of Gnosticism, a religious movement that emerged in the early Christian era and which emphasized the...