Martin Luther, a doctor of theology and a monk, said that the church should return to its roots, and give more weight to what is written in the Bible (Sola scriptura). Luther thought that the Church had gone too far away from the original teachings. He published 95 theses on the way the Catholic Church was then. Some say, he stuck them onto the door of the church of Wittenberg, but others say this is not true. The 95 theses were published in 1516 or 1517. With the theses, he started the Protestant Reformation.