It may be suspected that this expedition, which proved so disastrous to the Persian monarch, was not the mere wanton act which it appears to be in the pages of our authorities. The nations of the north-east were at all times turbulent and irritable, with difficulty held in check by the civilized power that bore rule in the south and west. The expedition of Cyrus, whether directed against the Massagetae or the Derbices, was probably intended to strike terror into the barbarians of these regions, and was analogous to those invasions which were undertaken under the wisest of the Roman Emperors, across the Rhine and Danube, against Germans, Goths, and Sarmatae. The object of such inroads was not to conquer, but to alarm--it was hoped by an imposing display of organized military force to deter the undisciplined hordes of the prolific North from venturing across the frontier and carrying desolation through large tracts of the Empire. Defensive warfare has often an aggressive look. It may have been solely with the object of protecting his own territories from attack that Cyrus made his last expedition across the Jaxertes, or towards the upper Indus. The character of Cyrus, as represented to us by the Greeks, is the most favorable that we possess of any early Oriental monarch. Active, energetic, brave, fertile in stratagems, he has all the qualities required to form a successful military chief. He conciliates his people by friendly and familiar treatment, but declines to spoil them by yielding to their inclinations when they are adverse to their true interests. He has a ready humor, which shows itself in smart sayings and repartees, that take occasionally the favorite Oriental turn of parable or apologue. He is mild in his treatment of the prisoners that fall into his hands, and ready to forgive even the heinous crime of rebellion. He has none of the pride of the ordinary eastern despot, but converses on terms of equality with those about him. We cannot be surprised that the Persians, contrasting him with their later monarchs, held his memory in the highest veneration, and were even led by their affection for his person to make his type of countenance their standard of physical beauty.