"On Secular Authority" is a significant work by Martin Luther, which is part of the TREDITION CLASSICS book series. This series is dedicated to the re-publication of classic literature spanning over two millennia, ensuring that valuable texts do not fall into oblivion. The publisher tredition from Hamburg has made it their mission to make these works accessible in printed form, focusing on the preservation of literature and the promotion of cultural values. With a paperback cover and in German, this book offers a compact and engaging way to engage with Luther's thoughts on secular authority. The 2012 publication consists of 52 pages and is a valuable contribution to world literature, relevant for both literature enthusiasts and students.