Catholic leaders primarily sought to retain whatever Catholic members they had. Paul III and Paul IV played an important role in the Catholic Reformation and so did a man named Ignatius. Ignatius founded new religious orders and wrote a book on meditation, prayer and study. He gained many followers and in 1540 the pope created a group called the Society of Jesus. Anyone in this group was called a Jesuit and had three missions. They founded schools in Europe because the Jesuits were very intelligent when it came to classics and theology. Their next mission was the spread of the Catholic religion. Ultimately their greatest goal was to stop the spread of Protestantism. Paul III took four steps to reform the Catholic church. He first had the sale of indulgences and other church problems investigated. Then he made an agreement with the Jesuit order. He later used the Inquisition to search for heretics. His final step was to call a meeting in Trent, which was later called the Council of Trent. The Council of Trent lasted from 1545 to 1563, in those years they agreed on various things. They agreed that the Church's interpretation of the Bible was final and anyone who disagreed was a heretic. They also agreed that Christians must have faith to have salvation, but they also believed that good works must be done. They agreed that the sale of indulgences should be banned, but indulgences were expressions of faith. Paul IV ordered officials to collect all information deemed dangerous to the Catholic religion and burn it. More than 10,000 books were burned that day. These were some of the events that occurred during the Catholic