The Geistbuch is an anonymous vernacular theological treatise from the first half of the 14th century that circulated in Middle High German and Middle Dutch. Based on the biblical injunction of Jesus to Peter, Sequere me ("Follow me," John 21:19), the text describes the Christian path of perfection. The present volume offers for the first time a critical edition of the Geistbuch in its original Middle High German. It also includes a commentary on the sources, a reconstruction of the text's history and tradition, an analysis of its structure and method of argumentation and a word...