V. In the sweeping revenge of Mardonius, even private houses had been destroyed, excepting those which had served as lodgments for the Persian nobles [117]. Little of the internal city, less of the outward walls was spared. As soon as the barbarians had quitted their territory, the citizens flocked back with their slaves and families from the various places of refuge; and the first care was to rebuild the city. They were already employed upon this necessary task, when ambassadors arrived from Sparta, whose vigilant government, ever jealous of a rival, beheld with no unreasonable alarm the increasing navy and the growing fame of a people hitherto undeniably inferior to the power of Lacedaemon. And the fear that was secretly cherished by that imperious nation was yet more anxiously nursed by the subordinate allies [118]. Actuated by their own and the general apprehensions, the Spartans therefore now requested the Athenians to desist from the erection of their walls. Nor was it without a certain grace, and a plausible excuse, that the government of a city, itself unwalled, inveighed against the policy of walls for Athens. The Spartan ambassadors urged that fortified towns would become strongholds to the barbarian, should he again invade them; and the walls of Athens might be no less useful to him than he had found the ramparts of Thebes. The Peloponnesus, they asserted, was the legitimate retreat and the certain resource of all; and, unwilling to appear exclusively jealous of Athens, they requested the Athenians not only to desist from their own fortifications, but to join with them in razing every fortification without the limit of the Peloponnesus.
It required not a genius so penetrating as that of Themistocles to divine at once the motive of the demand, and the danger of a peremptory refusal. He persuaded the Athenians to reply that they would send ambassadors to debate the affair; and dismissed the Spartans without further explanation. Themistocles next recommended to the senate [119] that he himself might be one of the ambassadors sent to Sparta, and that those associated with him in the mission (for it was not the custom of Greece to vest embassies in individuals) should be detained at Athens until the walls were carried to a height sufficient, at least, for ordinary defence. He urged his countrymen to suspend for this great task the completion of all private edifices —nay, to spare no building, private or public, from which materials might be adequately selected. The whole population, slaves, women, and children, were to assist in the labour.
VI. This counsel adopted, he sketched an outline of the conduct he himself intended to pursue, and departed for Sparta. His colleagues, no less important than Aristides, and Abronychus, a distinguished officer in the late war, were to follow at the time agreed on.
Arrived in the Laconian capital, Themistocles demanded no public audience, avoided all occasions of opening the questions in dispute, and screened the policy of delay beneath the excuse that his colleagues were not yet arrived—that he was incompetent to treat without their counsel and concurrence—and that doubtless they would speedily appear in Sparta.
When we consider the shortness of the distance between the states, the communications the Spartans would receive from the neighbouring Aeginetans, more jealous than themselves, and the astute and proverbial sagacity of the Spartan council—it is impossible to believe that, for so long a period as, with the greatest expedition, must have elapsed from the departure of Themistocles to the necessary progress in the fortifications, the ephors could have been ignorant of the preparations at Athens or the designs of Themistocles. I fear, therefore, that we must believe, with Theopompus [120], that Themistocles, the most expert briber of his time, heightened that esteem which Thucydides assures us the Spartans bore him, by private and pecuniary negotiations with the ephors. At length, however, such decided and unequivocal intelligence of the progress of the walls arrived at Sparta, that the ephors could no longer feel or affect incredulity.
Themistocles met the remonstrances of the Spartans by an appearance of candour mingled with disdain. "Why," said he, "give credit to these idle rumours? Send to Athens some messengers of your own, in whom you can confide; let them inspect matters with their own eyes, and report to you accordingly."
The ephors (not unreluctantly, if the assertion of Theopompus may be credited) yielded to so plausible a suggestion, and in the mean while the crafty Athenian despatched a secret messenger to Athens, urging the government to detain the Spartan ambassadors with as little semblance of design as possible, and by no means to allow their departure until the safe return of their own mission to Sparta. For it was by no means improbable that, without such hostages, even the ephors, however powerful and however influenced, might not be enabled, when the Spartans generally were made acquainted with the deceit practised upon them, to prevent the arrest of the Athenian delegates. [121]
At length the walls, continued night and day with incredible zeal and toil, were sufficiently completed; and disguise, no longer possible, was no longer useful. Themistocles demanded the audience he had hitherto deferred, and boldly avowed that Athens was now so far fortified as to protect its citizens. "In future," he added, haughtily, "when Sparta or our other confederates send ambassadors to Athens, let them address us as a people well versed in our own interests and the interests of our common Greece. When we deserted Athens for our ships, we required and obtained no Lacedaemonian succours to support our native valour; in all subsequent measures, to whom have we shown ourselves inferior, whether in the council or the field? At present we have judged it expedient to fortify our city, rendering it thus more secure for ourselves and our allies. Nor would it be possible, with a strength inferior to that of any rival power, adequately to preserve and equally to adjust the balance of the liberties of Greece." [122]
Contending for this equality, he argued that either all the cities in the Lacedaemonian league should be dismantled of their fortresses, or that it should be conceded, that in erecting fortresses for herself Athens had rightly acted.
VII. The profound and passionless policy of Sparta forbade all outward signs of unavailing and unreasonable resentment. The Spartans, therefore, replied with seeming courtesy, that "in their embassy they had not sought to dictate, but to advise—that their object was the common good;" and they accompanied their excuses with professions of friendship for Athens, and panegyrics on the Athenian valour in the recent war. But the anger they forbore to show only rankled the more bitterly within. [123]