David of Augsburg
David of Augsburg was a medieval German mystic, and a Franciscan friar. It is believed that he probably joined the Franciscan Order at Regensburg. He was the master of novices in the Franciscan houses at Regensburg and Augsburg. He wrote the acclaimed "Formula Novitiorum".
His major work, written in the 1240s, is entitled The Composition of the Interior and Exterior Man according to the Triple states of Beginners, Proficient, and Perfect. It is composed of three different treatises whose dates and relationships are difficult to determine. It was clearly popular, since close to 400 manuscripts of the whole or parts survive, along with numerous translations.
He also composed various vernacular texts in Middle High German. The most notable of these are The Seven Stages of Prayer, and Concerning the Manifestation and Salvation of the Human Race.