The new war was a short one, though the Earl of Surrey invaded France again, and did some injury to that country. It ended in another treaty of peace between the two kingdoms, and in the discovery that the Emperor of Germany was not such a good friend to England in reality, as he pretended to be. Neither did he keep his promise to Wolsey to make him Pope, though the King urged him. Two Popes died in pretty quick succession; but the foreign priests were too much for the Cardinal, and kept him out of the post. So the Cardinal and King together found out that the Emperor of Germany was not a man to keep faith with; broke off a projected marriage between the King’s daughter Mary, Princess of Wales, and that sovereign; and began to consider whether it might not be well to marry the young lady, either to Francis himself, or to his eldest son. There now arose at Wittemberg, in Germany, the great leader of the mighty change in England which is called The Reformation, and which set the people free from their slavery to the priests. This was a learned Doctor, named Martin Luther, who knew all about them, for he had been a priest, and even a monk, himself. The preaching and writing of Wickliffe had set a number of men thinking on this subject; and Luther, finding one day to his great surprise, that there really was a book called the New Testament which the priests did not allow to be read, and which contained truths that they suppressed, began to be very vigorous against the whole body, from the Pope downward. It happened, while he was yet only beginning his vast work of awakening the nation, that an impudent fellow named Tetzel, a friar of very bad character, came into his neighbourhood selling what were called Indulgences, by wholesale, to raise money for beautifying the great Cathedral of St. Peter’s, at Rome. Whoever bought an Indulgence of the Pope was supposed to buy himself off from the punishment of Heaven for his offences. Luther told the people that these Indulgences were worthless bits of paper, before God, and that Tetzel and his masters were a crew of impostors in selling them. The King and the Cardinal were mightily indignant at this presumption; and the King (with the help of Sir Thomas More, a wise man, whom he afterwards repaid by striking off his head) even wrote a book about it, with which the Pope was so well pleased that he gave the King the title of Defender of the Faith. The King and the Cardinal also issued flaming warnings to the people not to read Luther’s books, on pain of excommunication. But they did read them for all that; and the rumour of what was in them spread far and wide.