Prudence as well as glory might have justified a war on the side of Artaxerxes, had his views been confined to the defence or acquisition of a useful frontier. but the ambitious Persian openly avowed a far more extensive design of conquest; and he thought himself able to support his lofty pretensions by the arms of reason as well as by those of power. Cyrus, he alleged, had first subdued, and his successors had for a long time possessed, the whole extent of Asia, as far as the Propontis and the Ægean Sea; the provinces of Caria and Ionia, under their empire, had been governed by Persian satraps, and all Egypt, to the confines of Æthiopia, had acknowledged their sovereignty. Their rights had been suspended, but not destroyed, by a long usurpation; and as soon as he received the Persian diadem, which birth and successful valor had placed upon his head, the first great duty of his station called upon him to restore the ancient limits and splendor of the monarchy. The Great King, therefore, (such was the haughty style of his embassies to the emperor Alexander,) commanded the Romans instantly to depart from all the provinces of his ancestors, and, yielding to the Persians the empire of Asia, to content themselves with the undisturbed possession of Europe. This haughty mandate was delivered by four hundred of the tallest and most beautiful of the Persians; who, by their fine horses, splendid arms, and rich apparel, displayed the pride and greatness of their master. Such an embassy was much less an offer of negotiation than a declaration of war. Both Alexander Severus and Artaxerxes, collecting the military force of the Roman and Persian monarchies, resolved in this important contest to lead their armies in person.