Indeed no place remained quiet or satisfied with the present condition; even amongst the Sicyonians and Corinthians themselves, many were well known to have had private conferences with Cleomenes, who long since, out of desire to make themselves masters of their several cities, had been discontented with the present order of things. Aratus, having absolute power given him to bring these to consign punishment, executed as many of them as he could find at Sicyon, but going about to find them out and punish them at Corinth also, he irritated the people, already unsound in feeling and weary of the Achaean government. So collecting tumultuously in the temple of Apollo, they sent for Aratus, having determined to take or kill him before they broke out into open revolt. He came accordingly, leading his horse in his hand, as if he suspected nothing. Then several leaping up and accusing and reproaching him, with mild words and a settled countenance he bade them sit down, and not stand crying out upon him in a disorderly manner, desiring also, that those that were about the door might be let in, and saying so, he stepped out quietly, as if he would give his horse to somebody. Clearing himself thus of the crowd, and speaking without discomposure to the Corinthians that he met, commanding them to go to Apollo's temple, and being now, before they were aware, got near to the citadel, he leaped upon his horse, and commanding Cleopater, the governor of the garrison, to have a special care of his charge, he galloped to Sicyon, followed by thirty of his soldiers, the rest leaving him and shifting for themselves. And not long after, it being known that he was fled, the Corinthians pursued him, but not overtaking him, they immediately sent for Cleomenes and delivered up the city to him, who, however, thought nothing they could give was so great a gain, as was the loss of their having let Aratus get away. Nevertheless, being strengthened by the accession of the people of the Acte, as it is called, who put their towns into his hands, he proceeded to carry a palisade and lines of circumvallation around the Acro-Corinthus.
But Aratus being arrived at Sicyon, the body of the Achaeans there flocked to him, and, in an assembly there held, he was chosen general with absolute power, and he took about him a guard of his own citizens, it being now three-and-thirty years since he first took a part in public affairs among the Achaeans, having in that time been the chief man in credit and power of all Greece; but he was now deserted on all hands, helpless and overpowered, drifting about amidst the waves and danger on the shattered hulk of his native city. For the Aetolians, whom he applied to, declined to assist him in his distress, and the Athenians who were well affected to him were diverted from lending him any succour by the authority of Euclides and Micion. Now whereas he had a house and property in Corinth, Cleomenes meddled not with it, nor suffered anybody else to do so, but calling for his friends and agents, he bade them hold themselves responsible to Aratus for everything, as to him they would have to render their account; and privately he sent to him Tripylus, and afterwards Megistonus, his own stepfather, to offer him, besides several other things, a yearly pension of twelve talents, which was twice as much as Ptolemy allowed him, for he gave him six;and all that he demanded was to be declared commander of the Achaeans, and together with them to have the keeping of the citadel of Corinth. To which Aratus returning answer that affairs were not so properly in his power as he was in the power of them, Cleomenes, believing this a mere evasion, immediately entered the country of Sicyon, destroying all with fire and sword, and besieged the city three months, whilst Aratus held firm, and was in dispute with himself whether he should call in Antigonus upon condition of delivering up the citadel of Corinth to him; for he would not lend him assistance upon any other terms.
In the meantime the Achaeans assembled at Aegium, and called for Aratus; but it was very hazardous for him to pass thither, while Cleomenes was encamped before Sicyon; besides, the citizens endeavoured to stop him by their entreaties, protesting that they would not suffer him to expose himself to so evident danger, the enemy being so near; the women, also, and children hung about him, weeping and embracing him as their common father and defender. But he, having comforted and encouraged them as well as he could, got on horseback, and being accompanied with ten of his friends and his son, then a youth, got away to the seaside, and finding vessels there waiting off the shore, went on board of them and sailed to Aegium to the assembly; in which it was decreed that Antigonus should be called in to their aid, and should have the Acro-Corinthus delivered to him. Aratus also sent his son to him with the other hostages. The Corinthians, extremely angry at this proceeding, now plundered his property, and gave his house as a present to Cleomenes.