Book of the Light of the Great Magistery of John of Rupescissa (Liber lucis magisterii magni)

Convinced that the antichrist was "e;at our gates,"e; the Franciscan friar, alchemist, and prophet John of Rupescissa (ca. 1310-1366) wrote The Book of the Light of the Great Magistery to help his future brethren restore a devastated Christendom after the antichrist's inevitable downfall. Written in 1354, John's text provides a detailed process for making the philosophers' stone, the substance abl...