In the course of time, Dinias and Aristoteles the logician killed Abantidas, who used to be present in the market-place at their discussions, and to make one in them; till they taking the occasion, insensibly accustomed him to the practice, and so had opportunity to contrive and execute a plot against him. After him Paseas, the father of Abantidas, taking upon him the government, was assassinated by Nicocles, who himself set up for tyrant. Of him it is related that he was strikingly like Periander, the son of Cypselus, just as it is said that Orontes the Persian bore a great resemblance to Alcmaeon, the son of Amphiaraus, and that Lacedaemonian youth, whom Myrsilus relates to have been trodden to pieces by the crowd of those that came to see him upon that report, to Hector.
This Nicocles governed four months, in which, after he had done all kinds of mischief to the city, he very nearly let it fall into the hands of the Aetolians. By this time Aratus, being grown a youth, was in much esteem, both for his noble birth, and his spirit and disposition, which, while neither insignificant nor wanting in energy, were solid, and tempered with a steadiness of judgment beyond his years. For which reason the exiles had their eyes most upon him, nor did Nicocles less observe his motions, but secretly spied and watched him, not out of apprehension of any such considerable or utterly audacious attempt, but suspecting he held correspondence with the kings, who were his father's friends and acquaintance. And, indeed, Aratus first attempted this way; but finding that Antigonus, who had promised fair, neglected him and delayed the time, and that his hopes from Egypt and Ptolemy were long to wait for, he determined to cut off the tyrant by himself.
And first he broke his mind to Aristomachus and Ecdelus, the one an exile of Sicyon, the other, Ecdelus, an Arcadian of Megalopolis, a philosopher, and a man of action, having been the familiar friend of Arcesilaus the Academic at Athens. These readily consenting, he communicated with the other exiles, whereof some few, being ashamed to seem to despair of success, engaged in the design; but most of them endeavoured to divert him from his purpose, as one that for want of experience was too rash and daring.
Whilst he was consulting to seize upon some post in Sicyonia, from whence he might make war upon the tyrant, there came to Argos a certain Sicyonian, newly escaped out of prison, brother to Xenocles, one of the exiles, who, being by him presented to Aratus, informed him that that part of the wall over which he escaped was, inside, almost level with the ground, adjoining a rocky and elevated place, and that from the outside it might be scaled with ladders. Aratus, hearing this, despatches away Xenocles with two of his own servants, Seuthas and Technon, to view the wall, resolving, if possible, secretly and with one risk to hazard all on a single trial, rather than carry on a contest as a private man against a tyrant by long war and open force. Xenocles, therefore, with his companions, returning, having taken the height of the wall, and declaring the place not to be impossible or indeed difficult to get over, but that it was not easy to approach it undiscovered by reason of some small but uncommonly savage and noisy dogs belonging to a gardener hard by, he immediately undertook the business.
Now the preparation of arms gave no jealousy, because robberies and petty forays were at that time common everywhere between one set of people and another; and for the ladders, Euphranor, the machine-maker, made them openly, his trade rendering him unsuspected, though one of the exiles. As for men, each of his friends in Argos furnished him with ten apiece out of those few they had, and he armed thirty of his own servants, and hired some few soldiers of Xenophilus, the chief of the robber captains, to whom it was given out that they were to march into the territory of Sicyon to seize the king's stud; most of them were sent before, in small parties, to the tower of Polygnotus, with orders to wait there;Caphisias also was despatched beforehand lightly armed, with four others, who were, as soon as it was dark, to come to the gardener's house, pretending to be travellers, and procuring their lodging there, to shut up him and his dogs; for there was no other way to getting past. And for the ladders, they had been made to take in pieces, and were put into chests, and sent before, hidden upon wagons. In the meantime, some of the spies of Nicocles appearing in Argos, and being said to go privately about watching Aratus, he came early in the morning into the market-place, showing himself openly and conversing with his friends; then he anointed himself in the exercise ground, and, taking with him thence some of the young men that used to drink and spend their time with him, he went home; and presently after several of his servants were seen about the market-place, one carrying garlands, another buying flambeaux, and a third speaking to the women that used to sing and play at banquets, all of which things the spies observing were deceived, and said, laughing to one another. "Certainly nothing can be more timorous than a tyrant, if Nicocles, being master of so great a city and so numerous a force, stands in fear of a youth that spends what he has to subsist upon in his banishment in pleasures and day-debauches;" and, being thus imposed upon, they returned home.