There was trembling in Greece. 'The Great King', as the Greeks called the chief potentate of the East, whose domains stretched from the Indian Caucasus to the Aegaeus, from the Caspian to the Red Sea, was marshalling his forces against the little free states that nestled amid the rocks and gulfs of the Eastern Mediterranean. Already had his might devoured the cherished colonies of the Greeks on the eastern shore of the Archipelago, and every traitor to home institutions found a ready asylum at that despotic court, and tried to revenge his own wrongs by whispering incitements to invasion. 'All people, nations, and languages,' was the commencement of the decrees of that monarch's court; and it was scarcely a vain boast, for his satraps ruled over subject kingdoms, and among his tributary nations he counted the Chaldean, with his learning and old civilization, the wise and steadfast Jew, the skilful Phoenician, the learned Egyptian, the wild, free-booting Arab of the desert, the dark-skinned Ethiopian, and over all these ruled the keen-witted, active native Persian race, the conquerors of all the rest, and led by a chosen band proudly called the Immortal. His many capitals--Babylon the great, Susa, Persepolis, and the like--were names of dreamy splendor to the Greeks, described now and then by Ionians from Asia Minor who had carried their tribute to the king's own feet, or by courtier slaves who had escaped with difficulty from being all too serviceable at the tyrannic court. And the lord of this enormous empire was about to launch his countless host against the little cluster of states, the whole of which together would hardly equal one province of the huge Asiatic realm! Moreover, it was a war not only on the men but on their gods. The Persians were zealous adorers of the sun and of fire, they abhorred the idol worship of the Greeks, and defiled and plundered every temple that fell in their way. Death and desolation were almost the best that could be looked for at such hands--slavery and torture from cruelly barbarous masters would only too surely be the lot of numbers, should their land fall a prey to the conquerors. True it was that ten years back the former Great King had sent his best troops to be signally defeated upon the coast of Attica; but the losses at Marathon had but stimulated the Persian lust of conquest, and the new King Xerxes was gathering together such myriads of men as should crush down the Greeks and overrun their country by mere force of numbers.