The people in the city were terrified into submission, many of those who had dared openly to oppose the four hundred having been put to death. But those who were at Samos, indignant when they heard this news, were eager to set sail instantly for the Piraeus; sending for Alcibiades, they declared him general, requiring him to lead them on to put down the tyrants. He, however, in that juncture, did not, as it might have been thought a man would, on being suddenly exalted by the favour of a multitude, think himself under an obligation to gratify and submit to all the wishes of those who, from a fugitive and an exile, had created him general of so great an army, and given him the command of such a fleet. But, as became a great captain, he opposed himself to the precipitate resolutions which their rage led them to, and, by restraining them from the great error they were about to commit, unequivocally saved the commonwealth. For if they then sailed to Athens, all Ionia and the islands and the Hellespont would have fallen into the enemies' hands without opposition, while the Athenians, involved in civil war, would have been fighting with one another within the circuit of their own walls. It was Alcibiades, alone, or, at least, principally, who prevented all this mischief; for he not only used persuasion to the whole army, and showed them the danger, but applied himself to them, one by one, entreating some, and constraining others. He was much assisted, however, by Thrasybulus of Stiria, who having the loudest voice, as we are told, of all the Athenians, went along with him, and cried out to those who were ready to be gone. A second great service which Alcibiades did for them was, his undertaking that the Phoenician fleet, which the Lacedaemonians expected to be sent to them by the King of Persia, should either come in aid of the Athenians or otherwise should not come at all. He sailed off with all expedition in order to perform this, and the ships, which had already been seen as near as Aspendus, were not brought any further by Tisaphernes, who thus deceived the Lacedaemonians; and it was by both sides believed that they had been diverted by the procurement of Alcibiades. The Lacedaemonians, in particular, accused him, that he had advised the Barbarian to stand still, and suffer the Greeks to waste and destroy one another, as it was evident that the accession of so great a force to either party would enable them to take away the entire dominion of the sea from the other side.
Soon after this, the four hundred usurpers were driven out, the friends of Alcibiades vigorously assisting those who were for the popular government. And now the people in the city not only desired, but commanded Alcibiades to return home from his exile. He, however, desired not to owe his return to the mere grace and commiseration of the people, and resolved to come back, not with empty hands, but with glory, and after some service done. To this end, he sailed from Samos with a few ships, and cruised on the sea of Cnidos, and about the isle of Cos; but receiving intelligence there that Mindarus, the Spartan admiral, had sailed with his whole army into the Hellespont, and that the Athenians had followed him, he hurried back to succour the Athenian commanders, and, by good fortune, arrived with eighteen galleys at a critical time. For both the fleets having engaged near Abydos, the fight between them had lasted till night, the one side having the advantage on one quarter, and the other on another. Upon his first appearance, both sides formed a false impression; the enemy was encouraged and the Athenians terrified. But Alcibiades suddenly raised the Athenian ensign in the admiral ship, and fell upon those galleys of the Peloponnesians which had the advantage and were in pursuit. He soon put these to flight, and followed them so close that he forced them on shore, and broke the ships in pieces, the sailors abandoning them and swimming away in spite of all the efforts of Pharnabazus, who had come down to their assistance by land and did what he could to protect them from the shore. In fine, the Athenians, having taken thirty of the enemy's ships, and recovered all their own, erected a trophy. After the gaining of so glorious a victory, his vanity made him eager to show himself to Tisaphernes, and, having furnished himself with gifts and presents, and an equipage suitable to his dignity, he set out to visit him. But the thing did not succeed as he had imagined, for Tisaphernes had been long suspected by the Lacedaemonians, and was afraid to fall into disgrace with his king upon that account, and therefore thought that Alcibiades arrived very opportunely, and immediately caused him to be seized, and sent away prisoner to Sardis; fancying, by this act of injustice, to clear himself from all former imputations.