In the meantime, Aratus was hard at work struggling to get up the rocks, at first slowly and with much difficulty, straying continually from the path, which lay deep, and was overshadowed with the crags, leading to the wall with many windings and turnings; but the moon immediately, and as if by miracle, it is said, dispersing the clouds, shone out and gave light to the most difficult part of the way, until he got to that part of the wall he desired, and there she overshadowed and hid him, the clouds coming together again. Those soldiers whom Aratus had left outside the gate, near Juno's temple, to the number of three hundred, entering the town, now full of tumult and lights, and not knowing the way by which the former had gone, and finding no track of them, slunk aside, and crowded together in one body under a flank of the cliff that cast a strong shadow, and there stood and waited in great distress and perplexity. For, by this time, those that had gone with Aratus were attacked with missiles from the citadel, and were busy fighting, and a sound of cries of battle came down from above, and a loud noise, echoed back and back from the mountain sides, and therefore confused and uncertain whence it proceeded, was heard on all sides. They being thus in doubt which way to turn themselves, Archelaus, the commander of Antigonus's troops, having a great number of soldiers with him, made up towards the castle with great shouts and noise of trumpets to fall upon Aratus's people, and passed by the three hundred, who, as if they had risen out of an ambush, immediately charged him, killing the first they encountered, and so affrighted the rest, together with Archelaus, that they put them to flight and pursued them until they had quite broken and dispersed them about the city. No sooner were these defeated, but Erginus came to them from those that were fighting above, to acquaint them that Aratus was engaged with the enemy, who defended themselves very stoutly, and there was a fierce conflict at the very wall, and need of speedy help. They therefore desired him to lead them on without delay, and, marching up, by their shouts made their friends understand who they were, and encouraged them;and the full moon, shining on their arms, made them, in the long line by which they advanced, appear more in number to the enemy than they were; and the echo of the night multiplied their shouts. In short, falling on with the rest, they made the enemy give way, and were masters of the castle and garrison, day now beginning to be bright, and the rising sun shining out upon their success. By this time, also, the rest of his army came up to Aratus from Sicyon, the Corinthians joyfully receiving them at the gates and helping them to secure the king's party.
And now, having put all things into a safe posture, he came down from the castle to the theatre, an infinite number of people crowding thither to see him and to hear what he would say to the Corinthians. Therefore drawing up the Achaeans on each side of the stage-passages, he came forward himself upon the stage, with his corselet still on, and his face showing the effects of all his hard work and want of sleep, so that his natural exultation and joyfulness of mind were overborne by the weariness of his body. The people, as soon as he came forth, breaking out into great applauses and congratulations, he took his spear in his right hand, and, resting his body upon it with his knee a little bent, stood a good while in that posture, silently receiving their shouts and acclamations, while they extolled his valour and wondered at his fortune; which being over, standing up, he began an oration in the name of the Achaeans, suitable to the late action, persuading the Corinthians to associate themselves to the Achaeans, and withal delivered up to them the keys of their gates, which had never been in their power since the time of King Philip. Of the captains of Antigonus, he dismissed Archelaus, whom he had taken prisoner, and Theophrastus, who refused to quit his post, he put to death. As for Persaeus, when he saw the castle was lost, he had got away to Cenchreae, where, some time after, discoursing with one that said to him that the wise man only is a true general, "Indeed," he replied, "none of Zeno's maxims once pleased me better than this, but I have been converted to another opinion by the young man of Sicyon." This is told by many of Persaeus.
Aratus immediately after made himself master of the temple of Juno and haven of Lechaeum, seized upon five-and-twenty of the king's ships, together with five hundred horses and four hundred Syrians: these he sold. The Achaeans kept guard in the Acro-Corinthus with a body of four hundred soldiers, and fifty dogs with as many keepers.