But that by which he obtained most glory and renown was when he started from Pegae, in the Megarian territory, and sailed round the Peloponnesus with a fleet of a hundred triremes; for he not only laid waste much of the country near the coast, as Tolmides had previously done, but he proceeded far inland, away from his ships, leading the troops who were on board, and terrified the inhabitants so much that they shut themselves up in their strongholds.  The men of Sikyon alone ventured to meet him at Nemea, and them he overthrew in a pitched battle, and erected a trophy.  Next he took on board troops from the friendly district of Achaia, and, crossing over to the opposite side of the Corinthian Gulf, coasted along past the mouth of the river Achelous, overran Akarnania, drove the people of Oeneadae to the shelter of their city walls, and after ravaging the country returned home, having made himself a terror to his enemies, and done good service to Athens; for not the least casualty, even by accident, befel the troops under his command.

XX.  When he sailed into the Black Sea with a great and splendidly equipped fleet, he assisted the Greek cities there, and treated them with consideration; and showed the neighbouring savage tribes and their chiefs the greatness of his force, and his confidence in his power, by sailing where he pleased, and taking complete control over that sea.  He left at Sinope thirteen ships, and a land force under the command of Lamachus, to act against Timesileon, who had made himself despot of that city.  When he and his party were driven out, Perikles passed a decree that six hundred Athenian volunteers should sail to Sinope, and become citizens there, receiving the houses and lands which had formerly been in the possession of the despot and his party.  But in other cases he would not agree to the impulsive proposals of the Athenians, and he opposed them when, elated by their power and good fortune, they talked of recovering Egypt and attacking the seaboard of the Persian empire.  Many, too, were inflamed with that ill-starred notion of an attempt on Sicily, which was afterwards blown into a flame by Alkibiades and other orators.  Some even dreamed of the conquest of Etruria and Carthage, in consequence of the greatness which the Athenian empire had already reached, and the full tide of success which seemed to attend it.

XXI.  Perikles, however, restrained these outbursts, and would not allow the people to meddle with foreign states, but used the power of Athens chiefly to preserve and guard her already existing empire, thinking it to be of paramount importance to oppose the Lacedaemonians, a task to which he bent all his energies, as is proved by many of his acts, especially in connection with the Sacred War.  In this war the Lacedaemonians sent a force to Delphi, and made the Phokaeans, who held it, give it up to the people of Delphi:  but as soon as they were gone Perikles made an expedition into the country, and restored the temple to the Phokaeans; and as the Lacedaemonians had scratched the oracle which the Delphians had given them, on the forehead of the brazen wolf there, Perikles got a response from the oracle for the Athenians, and carved it on the right side of the same wolf.