Not many know Martin Luther outside Europe. He was a German professor of theology, priest, author, composer, Augustinian monk, and a seminal figure in the Reformation. Luther was ordained to the priesthood in 1507. He came to reject several teachings and practices of the Roman Catholic Church; in particular, he disputed the view on indulgences. Luther proposed an academic discussion of the practice and efficacy of indulgences in his Ninety-five Theses of 1517.