Being sent in joint commission with Cimon to the war, he took notice that Pausanias and the other Spartan captains made themselves offensive by imperiousness and harshness to the confederates; and by being himself gentle and considerate with them, and by the courtesy and disinterested temper which Cimon, after his example, manifested in the expeditions, he stole away the chief command from the Lacedaemonians, neither by weapons, ships, or horses, but by equity and wise policy. For the Athenians being endeared to the Greeks by the justice of Aristides and by Cimon's moderation, the tyranny and selfishness of Pausanias rendered them yet more desirable. He on all occasions treated the commanders of the confederates haughtily and roughly; and the common soldiers he punished with stripes, or standing under the iron anchor for a whole day together; neither was it permitted for any to provide straw for themselves to lie on, or forage for their horses, or to come near the springs to water before the Spartans were furnished, but servants with whips drove away such as approached. And when Aristides once was about to complain and expostulate with Pausanias, he told him with an angry look that he was not at leisure, and gave no attention to him. The consequence was that the sea captains and generals of the Greeks, in particular, the Chians, Samians, and Lesbians, came to Aristides and requested him to be their general, and to receive the confederates into his command, who had long desired to relinquish the Spartans and come over to the Athenians. But he answered that he saw both equity and necessity in what they said, but their fidelity required the test of some action, the commission of which would make it impossible for the multitude to change their minds again. Upon which Uliades, the Samian, and Antagoras of Chios, conspiring together, ran in near Byzantium on Pausanias's galley, getting her between them as she was sailing before the rest. But when Pausanias, beholding them, arose up and furiously threatened soon to make them know that they had been endangering not his galley, but their own countries, they bid him go his way, and thank Fortune that fought for him at Plataea; for hitherto, in reverence to that, the Greeks had forborne from inflicting on him the punishment he deserved. In fine, they all went off and joined the Athenians. And here the magnanimity of the Lacedaemonians was wonderful. For when they perceived that their generals were becoming corrupted by the greatness of their authority, they voluntarily laid down the chief command, and left off sending any more of them to the wars, choosing rather to have citizens of moderation and consistent in the observance of their customs, than to possess the dominion of all Greece.
Even during the command of the Lacedaemonians, the Greeks paid a certain contribution towards the maintenance of the war; and being desirous to be rated city by city in their due proportion, they desired Aristides of the Athenians, and gave him command, surveying the country and revenue, to assess every one according to their ability and what they were worth. But he, being so largely empowered, Greece as it were submitting all her affairs to his sole management, went out poor and returned poorer; laying the tax not only without corruption and injustice, but to the satisfaction and convenience of all. For as the ancients celebrated the age of Saturn, so did the confederates of Athens Aristides's taxation, terming it the happy time of Greece; and that more especially, as the sum was in a short time doubled, and afterwards trebled. For the assessment which Aristides made was four hundred and sixty talents.
But to this Pericles added very near one third part more; for Thucydides says that in the beginning of the Peloponnesian war the Athenians had coming in from their confederates six hundred talents.
But after Pericles's death. the demagogues, increasing by little and little, raised it to the sum of thirteen hundred talents; not so much through the war's being so expensive and changeable either by its length or ill success, as by their alluring the people to spend upon largesses and playhouse allowances, and in erecting statues and temples. Aristides, therefore, having acquired a wonderful and great reputation by this levy of the tribute, Themistocles is said to have derided him, as if this had been not the commendation of a man, but a money-bag; a retaliation, though not in the same kind for some free words which Aristides had used. For he, when Themistocles once was saying that he thought the highest virtue of a general was to understand and foreknow the measures the enemy would take, replied, "This, indeed, Themistocles, is simply necessary, but the excellent thing in a general is to keep his hands from taking money."Aristides, moreover, made all the people of Greece swear to keep the league, and himself took the oath in the name of the Athenians, flinging wedges of red-hot iron into the sea, after curses against such as should make breach of their vow. But afterwards, it would seem, when things were in such a state as constrained them to govern with a stronger hand, he bade the Athenians to throw the perjury upon him, and manage affairs as convenience required. And, in general, Theophrastus tells us, that Aristides was, in his own private affairs, and those of his fellow-citizens, rigorously just, but that in public matters he acted often in accordance with his country's policy, which demanded, sometimes, not a little injustice. It is reported of him that he said in a debate, upon the motion of the Samians for removing the treasure from Delos to Athens, contrary to the league, that the thing indeed was not just but was expedient.