1st Edition

The Book of the Light of the Great Magistery of John of Rupescissa (Liber lucis magisterii magni) Sources of Alchemy and Chemistry: Sir Robert Mond Studies in the History of Early Chemistry

By Lawrence M. Principe Copyright 2026
272 Pages 5 Color & 18 B/W Illustrations
by Routledge

272 Pages 5 Color & 18 B/W Illustrations
by Routledge

Convinced that the antichrist was “at our gates,” 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 able... Read more

Part 1: Introduction

1. John of Rupescissa and His Liber lucis magisterii magni

2. The Content and Context of the Liber lucis magisterii magni

3. The Text’s Transmission in Manuscript and Print and Its Users

Part 2: Edition and Translation

4. The Liber lucis magisterii magni

5. Critical Edition and English Translation

Part 3: Manuscripts

6. Witness Families and Manuscript Descriptions

Biography

Lawrence M. Principe is the Drew Professor of the Humanities in the Department of the History of Science and Technology and the Department of Chemistry at Johns Hopkins University.