Here dissolution is going rapidly forward. Every power that has once more for a short time possessed some importance in Greece succumbs to it in turn; first Sparta, then Thebes and Athens. The attempts to establish permanent and assured conditions by local unions in small districts, as in Chalcidice under Olynthus, in Bœotia and Arcadia, were never able to hold out more than a short time. It was useless to look longer for the fulfilment of the national destiny. Feeble as the Persian kingdom was internally, every revolt against it, to say nothing of an attempt to make conquests and acquire a new field of colonisation in Asia,--the programme that Isocrates repeatedly urged upon the nation,--was made impossible by internal strife. Prosperity was ruined, the energy of the nation was exhausted in the wild feuds of brigands, the most desolate conditions prevailed in all communities. Greek history ends in chaos, in a hopeless struggle of all against all. In this same period, to be sure, the positive, constructive criticism of Socrates and his school rose in opposition to the negative tendencies of sophistry; and made the attempt to put an end to the political misery, to create by a proper education the true citizen who looks only to the common welfare in place of the ignorant citizen of the existing states, who was governed only by self-interest. These efforts resulted in the development of science and the preservation for all future time of the highest achievements of the intellectual life of Hellas, but they could not produce an internal transformation of men and states, whose earthly life does not lie within the sphere of the problems of theoretical perception, but in that of the problems of will and power. So at the same time that Greek culture has reached the highest point of its development, prepared to become the culture of the world, the Greek nation is condemned to complete impotence. For the development in the West, different as was its course, led to no other result. In the fifth century Greece controlled almost all Sicily except the western point, the whole south of Italy up to Tarentum, Elea and Posidonia and the coast of Campania. Nowhere was an enemy to be seen that might have become dangerous. The Carthaginians were repulsed, and the power of the Etruscans, who in the sixth century had striven for the hegemony in Italy, decayed, partly from internal weakness, partly in consequence of the revolt of their subjects, especially the Romans and the Sabines. The Cumæans under Aristodemus with the Sabines as their allies defeated Aruns, the son of Porsena of Clusium, at Aricia about 500 B.C., and in the year 474 the Etruscan sea power suffered defeat at Cumæ from the fleet of Hiero of Syracuse.