In the preceding chapter we have spoken of the attempts of the Asiatics on Egypt and the south shore of the Mediterranean; we have now to turn to their operations on the north shore, the consequences of which are of the utmost interest in the history of philosophy. It appears that the cities of Asia Minor, after their contest with the Lydian kings, had fallen an easy prey to the Persian power. It remained, therefore, only for that power to pass to the European continent. A pretext is easily found where the policy is so clear. So far as the internal condition of Greece was concerned, nothing could be more tempting to an invader. There seemed to be no bond of union between the different towns, and, indeed, the more prominent ones might be regarded as in a state of chronic revolution. In Athens, since B.C. 622, the laws of Draco had been supplanted by those of Solon; and again and again the government had been seized by violence or gained through intrigue by one adventurer after another. Under these circumstances the Persian king passed an army into Europe. The military events of both this and the succeeding invasion under Xerxes have been more than sufficiently illustrated by the brilliant imagination of the lively Greeks. It was needless, however, to devise such fictions as the million of men who crossed into Europe, or the two hundred thousand who lay dead upon the field after the battle of Platæa. If there were not such stubborn facts as the capture and burning of Athens, the circumstance that these wars lasted for fifty years would be sufficient to inform us that all the advantages were not on one side. Wars do not last so long without bringing upon both parties disasters as well as conferring glories; and had these been as exterminating and overwhelming as classical authors have supposed, our surprise may well be excited that the Persian annals have preserved so little memory of them. Greece did not perceive that, if posterity must take her accounts as true, it must give the palm of glory to Persia, who could, with unfaltering perseverance, persist in attacks illustrated by such unparalleled catastrophes. She did not perceive that the annals of a nation may be more splendid from their exhibiting a courage which could bear up for half a century against continual disasters, and extract victory at last from defeat.