This state of things is now, it is true, rapidly undergoing a change. The age of chivalry, of military murder and robbery, and of the glory of great deeds of carnage and blood, is passing away, and that of peace, of industry, and of achievements for promoting the comfort and happiness of mankind is coming. The men who are now advancing to the notice of the world are those who, through their commerce or their manufactures, feed and clothe their fellow-men by millions, or, by opening new channels or new means for international intercourse, civilize savages, and people deserts; while the glory of killing and destroying is less and less regarded, and more and more readily forgotten. In the days of Xerxes, however, there was no road to honor but by war, and Mardonius found that his only hope of rising to distinction was by conducting a vast torrent of military devastation over some portion of the globe; and the fairer, the richer, the happier the scene which he was thus to inundate and overwhelm, the greater would be the glory. He was very much disposed, therefore, to urge on the invasion of Greece by every means in his power. Artabanus, on the other hand, the uncle of Xerxes, was a man advanced in years, and of a calm and cautious disposition. He was better aware than younger men of the vicissitudes and hazards of war, and was much more inclined to restrain than to urge on the youthful ambition of his nephew. Xerxes had been able to present some show of reason for his campaign in Egypt, by calling the resistance which that country offered to his power a rebellion. There was, however, no such reason in the case of Greece. There had been two wars between Persia and the Athenians already, it is true. In the first, the Athenians had aided their countrymen in Asia Minor in a fruitless attempt to recover their independence. This the Persian government considered as aiding and abetting a rebellion. In the second, the Persians under Datis, one of Darius's generals, had undertaken a grand invasion of Greece, and, after landing in the neighborhood of Athens, were beaten, with immense slaughter, at the great battle of Marathon, near that city. The former of these wars is known in history as the Ionian rebellion; the latter as the first Persian invasion of Greece. They had both occurred during the reign of Darius, and the invasion under Datis had taken place not many years before the accession of Xerxes, so that a great number of the officers who had served in that campaign were still remaining in the court and army of Xerxes at Susa. These wars had, however, both been terminated, and Artabanus was very little inclined to have the contests renewed.