The Dominican Order was also greatly helped by what German friar?
Another who contributed significantly to the spirituality of the order is Albertus Magnus, the only person of the period to be given the appellation "Great". His influence on the brotherhood permeated nearly every aspect of Dominican life. Albert was a scientist, philosopher, astrologer, theologian, spiritual writer, ecumenist, and diplomat. Under the auspices of Humbert of Romans, Albert molded the curriculum of studies for all Dominican students, introduced Aristotle to the classroom and probed the work of Neoplatonists, such as Plotinus. Indeed, it was the thirty years of work done by Thomas Aquinas and himself (1245–1274) that allowed for the inclusion of Aristotelian study in the curriculum of Dominican schools.
On 31 October 1517, Martin Luther supposedly nailed his 95 theses against the selling of indulgences at the door of the All Saints', the Castle Church in Wittenberg. The theses debated and criticised the Church and the papacy, but concentrated upon the selling of indulgences and doctrinal policies about purgatory, particular judgment, and the authority of the pope. He would later write works on the Catholic devotion to Virgin Mary, the intercession of and devotion to the saints, the sacraments, mandatory clerical celibacy, monasticism, further on the authority of the pope, the ecclesiastical law, censure and excommunication, the role of secular rulers in religious matters, the relationship between Christianity and the law, good works, and the sacraments.