In the Isthmian congress the genius of Themistocles found an ampler sphere than it had hitherto done among the noisy cabals of Athens. Of all the Greek delegates, that sagacious statesman was most successful in accomplishing the primary object of the confederacy, viz., in removing the jealousies and the dissensions that hitherto existed among the states which composed it. In this, perhaps the most difficult, as the most essential, task, Themistocles was aided by a Tegean, named Chileus, who, though he rarely appears upon the external stage of action, seems to have been eminently skilled in the intricate and entangled politics of the time. Themistocles, into whose hands the Athenian republic, at this period, confided the trust not more of its interests than its resentments, set the example of concord; and Athens, for a while, consented to reconciliation and amity with the hated Aegina. All the proceedings of this illustrious congress were characterized by vigilant prudence and decisive energy. As soon as Xerxes arrived in Sardis, emissaries were despatched to watch the movements of the Persian army, and at the same period, or rather some time before [61], ambassadors were sent to Corcyra, Crete, Argos, and to Syracuse, then under the dominion of Gelo. This man, from the station of a high-born and powerful citizen of Gela, in Sicily, had raised himself, partly by military talents, principally by a profound and dissimulating policy, to the tyranny of Gela and of Syracuse. His abilities were remarkable, his power great; nor on the Grecian continent was there one state that could command the force and the resources that were at the disposal of the Syracusan prince. The spies despatched to Sardis were discovered, seized, and would have been put to death, but for the interference of Xerxes, who dismissed them, after directing them to be led round his army, in the hope that their return from the terror of such a spectacle would, more than their death, intimidate and appal their countrymen.