The Persian civilization came in contact with the Grecian; the Egyptian with the Grecian and Roman; the Roman with the Grecian; and finally the modern civilization of Europe with all those at present subsisting on the globe, and especially with the Arabian. The contact of Greek intelligence with the culture of the Persians was as frequent as it was compulsory. The greater portion of the Hellenic population, and the wealthiest, though not the most independent, was concentrated in the cities of the Syrian coast, the Greek colonies of Asia Minor, and on the shores of the Euxine, all of which formed a part of the Persian dominions. Though these colonies preserved their own local laws and politics, they were under the authority of the satraps of the great king. Intimate relations, moreover, were maintained between European Greece and Asia. That the Persians were then possessed of a high degree of civilization is proved by their political organization and financial administration, by the magnificent ruins which still attest the splendor and grandeur of their cities. But the principles of government and religion, the modes and habits of life, the genius of the arts, were very differently understood by the two nations; and, therefore, notwithstanding their constant intercourse, neither made the slightest approach toward assimilation with the other. The Greeks called their puissant neighbors barbarians, and the latter, no doubt, amply returned the compliment. In Ecbatana no other form of government could be conceived than an undivided hereditary authority, limited only by certain religious prescriptions and a court ceremonial. The genius of the Greeks tended to an endless variety of governmental forms; subdivided into a number of petty sovereignties. Greek society presented a singular mosaic of political structures; oligarchical in Sparta, democratical in Athens, tyrannical in Sicyon, monarchical in Macedonia, the forms of government were the same in scarcely two cities or districts. The state religion of the Persians evinced the same tendency to unity as their politics, and was more of a metaphysical and moral than a material character. The Greeks, on the contrary, had a symbolical system of religion, consisting in the worship of natural objects and influences, which gradually changed into a perfect prosopopoeia, representing the gods as sentient beings, subject to the same passions, and engaged in the same pursuits and occupations as the inhabitants of the earth. The worship consisted principally in the performance of rites and demonstrations of respect to the deities; the conscience was left to the direction of the civil laws. Besides, the rites, as well as the divinities and heroes in whose honor they were practised, were different in every place.