But what an impressive moral does the history of human greatness convey! The hour of triumph is often but the harbinger of defeat and shame. "Pride goeth before destruction." Charles V., with all his policy and experience, overreached himself. The failure of his ambitious projects and the restoration of Protestantism, were brought about by instruments the least anticipated. [Sidenote: Heroism of Maurice..] [Sidenote: Misfortunes of Charles..] The cause of Protestantism and the liberties of Germany were endangered by the treachery of Maurice, who received, as his reward, the great electorate of Saxony. He had climbed to the summit of glory and power. Who would suppose that this traitor prince would desert the emperor, who had so splendidly rewarded his services, and return to the rescue of those princes whom he had so basely betrayed? But who can thread the labyrinth of an intriguing and selfish heart? Who can calculate the movements of an unprincipled and restless politician? Maurice, at length, awoke to the perception of the real condition of his country. He saw its liberties being overturned by the most ambitious man whom ten centuries had produced. He saw the cause, which his convictions told him was the true one, in danger of being wrecked. He was, moreover, wounded by the pride, coldness, and undisguised selfishness of the emperor. He was indignant that the landgrave, his father-in-law, should be retained a prisoner, against all the laws of honor and of justice. He resolved to come to the rescue of his country. He formed his plans with the greatest coolness, and exercised a power of dissimulation that has no parallel in history. But his address was even greater than his hypocrisy. He gained the confidence of the Protestants, without losing that of the emperor. He even obtained the command of an army which Charles sent to reduce the rebellious city of Magdeburg, and, while he was besieging the city, he was negotiating with the generals who defended it for a general union against the emperor. Magdeburg surrendered in 1551. Its chieftains were secretly assured that the terms of capitulation should not be observed. His next point was, to keep the army together until his schemes were ripened, and then to arrest the emperor, whose thoughts now centred on the council of Trent. So he proposed sending Protestant divines to the council, but delayed their departure by endless negotiations about the terms of a safe conduct. He, moreover, formed a secret treaty with Henry II., the successor of Francis, whose animosity against Charles was as intense as was that of his father. When his preparations were completed, he joined his army in Thuringia, and took the field against the emperor, who had no suspicion of his designs, and who blindly trusted to him, deeming it impossible that a man, whom he had so honored and rewarded, could turn against him. March 18, 1552, Maurice published his manifesto, justifying his