Five years afterwards, when Stilicho was busy in endeavoring to keep the Franks and Alemanni out of Gaul, and to drive back the incursions of mixed German and Celtic bands which began to descend from the Alps, Alaric again made his appearance, demanding the payment of certain sums, which he claimed were due to him. Stilicho, having need of his military strength elsewhere, satisfied Alaric's claim by the payment of 4,000 pounds of gold; but the Romans felt themselves bitterly humiliated, and Honorius, listening to the rivals of Stilicho, gave his consent to the assassination of the latter and his whole family including the Emperor's own sister, Serena, whom Stilicho had married. When the news of this atrocious act reached Alaric, he turned and marched back to Italy. There was now no skilful commander to oppose him: the cowardly Honorius took refuge in Ravenna, and the Goths advanced, without resistance, to the gates of Rome. The walls, built by Aurelian, were too strong to be taken by assault, but all supplies were cut off, and the final surrender of the city became only a question of time. When a deputation of Romans represented to Alaric that the people still numbered half a million, he answered: "The thicker the grass, the better the mowing!" They were finally obliged to yield to his demands, and pay a ransom consisting of 5,000 pounds of gold, 30,000 pounds of silver, many thousands of silk robes, and a large quantity of spices,--a total value of something more than three millions of dollars. In addition to this, 40,000 slaves, mostly of Germanic blood, escaped to his camp and became free. Alaric only withdrew into Northern Italy, where he soon found a new cause of dispute with the government of Honorius, in Ravenna. He seems to have been a man of great military genius, but little capacity for civil rule; of much energy and ambition, but little judgment. The result of his quarrel with Honorius was, that he marched again to Rome, proclaimed Attalus, the governor of the city, Emperor, and then demanded entrance for himself and his troops, as an ally. The demand could not be refused: Rome was opened to the Goths, who participated in the festivals which accompanied the coronation of Attalus. It was nothing but a farce, and seems to have been partly intended as such by Alaric, who publicly deposed the new Emperor shortly afterwards, on his march to Ravenna. [Sidenote: 410. ALARIC IN ROME.]