One of the provisions of ostracism was that the person banished should remain in exile for ten years. But during this period the Lacedæmonians with a great force invaded the territory of Tanagra, and, as the Athenians at once marched out to attack them, Cimon came back from exile, took his place in full armor among the ranks of his own tribe, and hoped by distinguishing himself in the battle among his fellow-citizens to prove the falsehood of the Laconian sympathies with which he had been charged. However, the friends of Pericles drove him away, as an exile. On the other hand, Pericles fought more bravely in that battle than he had ever fought before, and surpassed everyone in reckless daring. The friends of Cimon also, whom Pericles had accused of Laconian leanings, fell, all together, in their ranks; and the Athenians felt great sorrow for their treatment of Cimon, and a great longing for his restoration, now that they had lost a great battle on the frontier, and expected to be hard pressed during the summer by the Lacedaemonians. Pericles, perceiving this, lost no time in gratifying the popular wish, but himself proposed the decree for his recall; and Cimon on his return reconciled the two states, for he was on familiar terms with the Spartans, who were hated by Pericles and the other leaders of the common people. Some say that, before Cimon's recall by Pericles, a secret compact was made with him by Elpinice, Cimon's sister, that Cimon was to proceed on foreign service against the Persians with a fleet of two hundred ships, while Pericles was to retain his power in the city. It is also said that, when Cimon was being tried for his life, Elpinice softened the resentment of Pericles, who was one of those appointed to impeach him. When Elpinice came to beg her brother's life of him, he answered with a smile, "Elpinice, you are too old to meddle in affairs of this sort." But, for all that, he spoke only once, for form's sake, and pressed Cimon less than any of his other prosecutors. How, then, can one put any faith in Idomeneus, when he accuses Pericles of procuring the assassination of his friend and colleague Ephialtes, because he was jealous of his reputation? This seems an ignoble calumny which Idomeneus has drawn from some obscure source to fling at a man who, no doubt, was not faultless, but of a generous spirit and noble mind, incapable of entertaining so savage and brutal a design. Ephialtes was disliked and feared by the nobles, and was inexorable in punishing those who wronged the people; wherefore his enemies had him assassinated by means of Aristodicus of Tanagra. This we are told by Aristotle. Cimon died in Cyprus while in command of the Athenian forces.

The nobles now perceived that Pericles was the most important man in the state, and far more powerful than any other citizen; wherefore, as they still hoped to check his authority, and not allow him to be omnipotent, they set up Thucydides, of the township of Alopecae, as his rival, a man of good sense and a relative of Cimon, but less of a warrior and more of a politician, who, by watching his opportunities, and opposing Pericles in debate, soon brought about a balance of power. He did not allow the nobles to mix themselves up with the people in the public assembly as they had been wont to do, so that their dignity was lost among the masses; but he collected them into a separate body, and by thus concentrating their strength was able to use it to counterbalance that of the other party. From the beginning these two factions had been but imperfectly welded together, because their tendencies were different; but now the struggle for power between Pericles and Thucydides drew a sharp line of demarcation between them, and one was called the party of the Many, the other that of the Few. Pericles now courted the people in every way, constantly arranging public spectacles, festivals, and processions in the city, by which he educated the Athenians to take pleasure in refined amusements; and also he sent out sixty triremes to cruise every year, in which many of the people served for hire for eight months, learning and practising seamanship. Besides this he sent a thousand settlers to the Chersonese, five hundred to Naxos, half as many to Andros, a thousand to dwell among the Thracian tribe of the Bisaltae, and others to the new colony in Italy founded by the city of Sybaris, which was named Thurii. By this means he relieved the state of numerous idle agitators, assisted the necessitous, and overawed the allies of Athens by placing his colonists near them to watch their behavior.

The building of the temples, by which Athens was adorned, the people delighted, and the rest of the world astonished, and which now alone prove that the tales of the ancient power and glory of Greece are no fables, was what particularly excited the spleen of the opposite faction, who inveighed against him in the public assembly, declaring that the Athenians had disgraced themselves by transferring the common treasury of the Greeks from the island of Delos to their own custody. "Pericles himself," they urged, "has taken away the only possible excuse for such an act—the fear that it might be exposed to the attacks of the Persians when at Delos, whereas it would be safe at Athens. Greece has been outraged, and feels itself openly tyrannized over, when it sees us using the funds—which we extorted from it for the war against the Persians—for gilding and beautifying our city as if it were a vain woman, and adorning it with precious marbles and statues and temples worth a thousand talents." To this Pericles replied that the allies had no right to consider how their money was spent, so long as Athens defended them from the Persians; while they supplied neither horses, ships, nor men, but merely money, which the Athenians had a right to spend as they pleased, provided they afforded them that security which it purchased. It was right, he argued, that after the city had provided all that was necessary for war, it should devote its surplus money to the erection of buildings which would be a glory to it for all ages, while these works would create plenty by leaving no man unemployed, and encouraging all sorts of handicraft, so that nearly the whole city would earn wages, and thus derive both its beauty and its profit from itself. For those who were in the flower of their age, military service offered a means of earning money from the common stock; while, as he did not wish the mechanics and lower classes to be without their share, nor yet to see them receive it without doing work for it, he had laid the foundations of great edifices which would require industries of every kind to complete them; and he had done this in the interests of the lower classes, who thus, although they remained at home, would have just as good a claim to their share of the public funds as those who were serving at sea, in garrison, or in the field. The different materials used, such as stone, brass, ivory, gold, ebony, cypress-wood, and so forth, would require special artisans for each, such as carpenters, modelers, smiths, stone-masons, dyers, melters and moulders of gold, and ivory painters, embroiderers, workers in relief; and also men to bring them to the city, such as sailors and captains of ships and pilots for such as came by sea; and, for those who came by land, carriage builders, horse breeders, drivers, ropemakers, linen manufacturers, shoemakers, road menders, and miners. Each trade, moreover, employed a number of unskilled laborers, so that, in a word, there would be work for persons of every age and every class, and general prosperity would be the result.

These buildings were of immense size, and unequalled in beauty and grace, as the workmen endeavored to make the execution surpass the design in beauty; but what was most remarkable was the speed with which they were built. All these edifices, each of which one would have thought it would have taken many generations to complete, were all finished during the most brilliant period of one man's administration. In beauty each of them at once appeared venerable as soon as it was built; but even at the present day the work looks as fresh as ever, for they bloom with an eternal freshness which defies time, and seems to make the work instinct with an unfading spirit of youth.

The overseer and manager of the whole was Phidias, although there were other excellent architects and workmen, such as Callicrates and Ictinus, who built the Parthenon on the site of the old Hecatompedon, which had been destroyed by the Persians, and Coroebus, who began to build the Temple of Initiation at Eleusis, but who only lived to see the columns erected and the architraves placed upon them. On his death, Metagenes, of Xypete, added the frieze and the upper row of columns, and Xenocles, of Cholargos, crowned it with the domed roof over the shrine. As to the long wall, about which Socrates says that he heard Pericles bring forward a motion, Callicrates undertook to build it. The Odeum, which internally consisted of many rows of seats and many columns, and externally of a roof sloping on all sides from a central point, was said to have been built in imitation of the king of Persia's tent, and was built under Pericles' direction.

The Propylaea, before the Acropolis, were finished in five years by Mnesicles the architect; and a miraculous incident during the work seemed to show that the goddess did not disapprove, but rather encouraged and assisted the building. The most energetic and active of the workmen fell from a great height, and lay in a dangerous condition, given over by his doctors. Pericles grieved much for him; but the goddess appeared to him in a dream, and suggested a course of treatment by which Pericles quickly healed the workman. In consequence of this, he set up the brazen statue of Athene the Healer, near the old altar in the Acropolis. The golden statue of the goddess was made by Phidias, and his name appears upon the basement in the inscription. Almost everything was in his hands, and he gave his orders to all the workmen—as has been said before—because of his friendship with Pericles.

When the speakers of Thucydides' party complained that Pericles had wasted the public money, and destroyed the revenue, he asked the people in the assembly whether they thought he had spent much. When they answered, "Very much indeed," he said in reply; "Do not, then, put it down to the public account, but to mine; and I will inscribe my name upon all the public buildings." When Pericles said this, the people, either in admiration of his magnificence of manner, or being eager to bear their share in the glory of the new buildings, shouted to him with one accord to take what money he pleased from the treasury, and spend it as he pleased, without stint. And finally, he underwent the trial of ostracism with Thucydides, and not only succeeded in driving him into exile, but broke up his party.

As now there was no opposition to encounter in the city, and all parties had been blended into one, Pericles undertook the sole administration of the home and foreign affairs of Athens, dealing with the public revenue, the army, the navy, the islands and maritime affairs, and the great sources of strength which Athens derived from her alliances, as well with Greek as with foreign princes and states. Henceforth he became quite a different man: he no longer gave way to the people, and ceased to watch the breath of popular favor; but he changed the loose and licentious democracy which had hitherto existed, into a stricter aristocratic, or rather monarchical, form of government. This he used honorably and unswervingly for the public benefit, finding the people, as a rule, willing to second the measures which he explained to them to be necessary and to which he asked their consent, but occasionally having to use violence, and to force them, much against their will, to do what was expedient; like a physician dealing with some complicated disorder, who at one time allows his patient innocent recreation, and at another inflicts upon him sharp pains and bitter though salutary draughts. Every possible kind of disorder was to be found among a people possessing so great an empire as the Athenians, and he alone was able to bring them into harmony by playing alternately upon their hopes and fears, checking them when overconfident, and raising their spirits when they were cast down and disheartened. Thus, as Plato says, he was able to prove that oratory is the art of influencing men's minds, and to use it in its highest application, when it deals with men's passions and characters, which, like certain strings of a musical instrument, require a skilful and delicate touch. The secret of his power is to be found, however, as Thucydides says, not so much in his mere oratory as in his pure and blameless life, because he was so well known to be incorruptible, and indifferent to money; for though he made the city, which was a great one, into the greatest and richest city of Greece, and though he himself became more powerful than many independent sovereigns, who were able to leave their kingdoms to their sons, yet Pericles did not increase by one single drachma the estate which he received from his father. For forty years he held the first place among such men as Ephialtes, Leocrates, Myronides, Cimon, Tolmides, and Thucydides; and, after the fall and banishment of Thucydides by ostracism, he united in himself for five-and-twenty years all the various offices of state, which were supposed to last only for one year; and yet during the whole of that period proved himself incorruptible by bribes.

As the Lacedaemonians began to be jealous of the prosperity of the Athenians, Pericles, wishing to raise the spirit of the people and to make them feel capable of immense operations, passed a decree, inviting all the Greeks, whether inhabiting Europe or Asia, whether living in large cities or small ones, to send representatives to a meeting at Athens to deliberate about the restoration of the Greek temples which had been burned by the barbarians, about the sacrifices which were due in consequence of the vows which they had made to the gods on behalf of Greece before joining battle, and about the sea, that all men might be able to sail upon it in peace and without fear. To carry out this decree twenty men, selected from the citizens over fifty years of age, were sent out, five of whom invited the Ionian and Dorian Greeks in Asia and the islands as far as Lesbos and Rhodes, five went to the inhabitants of the Hellespont and Thrace as far as Byzantium, and five more proceeded to Boeotia, Phocis, and Peloponnesus, passing from thence through Locris to the neighboring continent as far as Acarnania and Ambracia; while the remainder journeyed through Euboea to the Oetaeans and the Malian Gulf, and to the Achaeans of Phthia and the Thessalians, urging them to join the assembly and take part in the deliberations concerning the peace and well-being of Greece. However, nothing was effected, and the cities never assembled, in consequence it is said of the covert hostility of the Lacedaemonians, and because the attempt was first made in Peloponnesus and failed there: yet I have inserted an account of it in order to show the lofty spirit and the magnificent designs of Pericles.

In his campaigns he was chiefly remarkable for caution, for he would not, if he could help it, begin a battle of which the issue was doubtful; nor did he wish to emulate those generals who have won themselves a great reputation by running risks and trusting to good luck. But he ever used to say to his countrymen, that none of them should come by their deaths through any act of his. Observing that Tolmides, the son of Tolmaeus, elated by previous successes and by the credit which he had gained as a general, was about to invade Boeotia in a reckless manner, and had persuaded a thousand young men to follow him without any support whatever, he endeavored to stop him, and made that memorable saying in the public assembly, that if Tolmides would not take the advice of Pericles, he would at any rate do well to consult that best of advisers, Time. This speech had but little success at the time; but when, a few days afterward, the news came that Tolmides had fallen in action at Coronea, and many noble citizens with him, Pericles was greatly respected and admired as a wise and patriotic man.