approbation of that senate without inquiring the reasons upon which it was founded. X. The next care of Themistocles was to anticipate the jealousy of Sparta, and forestall her interference. According to Diodorus, he despatched, therefore, ambassadors to Lacedaemon, representing the advantages of forming a port which might be the common shelter of Greece should the barbarian renew his incursions; but it is so obvious that Themistocles could hardly disclose to Sparta the very project he at first concealed from the Athenians, that while we may allow the fact that Themistocles treated with the Spartans, we must give him credit, at least, for more crafty diplomacy than that ascribed to him by Diodorus [128]. But whatever the pretexts with which he sought to amuse or beguile the Spartan government, they appear at least to have been successful. And the customary indifference of the Spartans towards maritime affairs was strengthened at this peculiar time by engrossing anxieties as to the conduct of Pausanias. Thus Themistocles, safe alike from foreign and from civil obstacles, pursued with activity the execution of his schemes. The Piraeus was fortified by walls of amazing thickness, so as to admit two carts abreast. Within, the entire structure was composed of solid masonry, hewn square, so that each stone fitted exactly, and was further strengthened on the outside by cramps of iron. The walls were never carried above half the height originally proposed. But the whole was so arranged as to form a fortress against assault, too fondly deemed impregnable, and to be adequately manned by the smallest possible number of citizens; so that the main force might, in time of danger, be spared to the fleet. Thus Themistocles created a sea-fortress more important than the city itself, conformably to the advice he frequently gave to the Athenians, that, if hard pressed by land, they should retire to this arsenal, and rely, against all hostilities, on their naval force. [129] The new port, which soon bore the ambitious title of the Lower City, was placed under the directions of Hippodamus, a Milesian, who, according to Aristotle [130], was the first author who, without any knowledge of practical affairs, wrote upon the theory of government. Temples [131], a market-place, even a theatre, distinguished and enriched the new town. And the population that filled it were not long before they contracted and established a character for themselves different in many traits and attributes from the citizens of the ancient Athens--more bold, wayward, innovating, and tumultuous. But if Sparta deemed it prudent, at present, to avoid a direct assumption of influence over Athens, her scheming councils were no less bent, though by indirect and plausible means, to the extension of her own power. To use the simile applied to one of her own chiefs, where the lion's skin fell short, she sought to eke it by the fox's.