VII. The siege of Thasos still continued, and the besieged took the precaution to send to Sparta for assistance. That sullen state had long viewed with indignation the power of Athens; her younger warriors clamoured against the inert indifference with which a city, for ages so inferior to Sparta, had been suffered to gain the ascendency over Greece. In vain had Themistocles been removed; the inexhaustible genius of the people had created a second Themistocles in Cimon. The Lacedaemonians, glad of a pretext for quarrel, courteously received the Thasian ambassadors, and promised to distract the Athenian forces by an irruption into Attica. They were actively prepared in concerting measures for this invasion, when sudden and complicated afflictions, now to be related, forced them to abandon their designs, and confine their attention to themselves. VIII. An earthquake, unprecedented in its violence, occurred in Sparta. In many places throughout Laconia the rocky soil was rent asunder. From Mount Taygetus, which overhung the city, and on which the women of Lacedaemon were wont to hold their bacchanalian orgies, huge fragments rolled into the suburbs. The greater portion of the city was absolutely overthrown; and it is said, probably with exaggeration, that only five houses wholly escaped the shock. This terrible calamity did not cease suddenly as it came; its concussions were repeated; it buried alike men and treasure: could we credit Diodorus, no less than twenty thousand persons perished in the shock. Thus depopulated, empoverished, and distressed, the enemies whom the cruelty of Sparta nursed within her bosom resolved to seize the moment to execute their vengeance and consummate her destruction. Under Pausanias we have seen before that the helots were already ripe for revolt. The death of that fierce conspirator checked, but did not crush, their designs of freedom. Now was the moment, when Sparta lay in ruins--now was the moment to realize their dreams. From field to field, from village to village, the news of the earthquake became the watchword of revolt. Up rose the helots (B. C. 464)--they armed themselves, they poured on--a wild, and gathering, and relentless multitude, resolved to slay by the wrath of man all whom that of nature had yet spared. The earthquake that levelled Sparta rent her chains; nor did the shock create one chasm so dark and wide as that between the master and the slave.