After the first compliments of kindness were over, when Plato began to discourse of Dion, he was at first diverted by excuses for delay, followed soon after by complaints and disgusts, though not as yet observable to others, Dionysius endeavouring to conceal them, and, by other civilities and honourable usage, to draw him off from his affection to Dion. And for some time Plato himself was careful not to let anything of this dishonesty and breach of promise appear, but bore with it, and dissembled his annoyance. While matters stood thus between them, and, as they thought, they were unobserved and undiscovered, Helicon, the Cyzicenian, one of Plato's followers, foretold an eclipse of the sun, which happened according to his prediction; for which he was much admired by the tyrant, and rewarded with a talent of silver; whereupon Aristippus, jesting with some others of the philosophers, told them, he also could predict something extraordinary; and on their entreating him to declare it, "Iforetell," said he, "that before long there will be a quarrel between Dionysius and Plato."At length, Dionysius made sale of Dion's estate, and converted the money to his own use, and removed Plato from an apartment he had in the gardens of the palace to lodgings among the guards he kept in pay, who from the first had hated Plato, and sought opportunity to make away with him, supposing he advised Dionysius to lay down the government and disband his soldiers.
When Archytas understood the danger he was in, he immediately sent a galley with messengers to demand him of Dionysius; alleging that he stood engaged for his safety, upon the confidence of which Plato had come to Sicily. Dionysius, to palliate his secret hatred, before Plato came away, treated him with great entertainments and all seeming demonstrations of kindness, but could not forbear breaking out one day into the expression, "No doubt, Plato, when you are at home among the philosophers, your companions, you will complain of me, and reckon up a great many of my faults." To which Plato answered with a smile, "The Academy will never, I trust, be at such a loss for subjects to discuss as to seek one in you." Thus, they say, Plato was dismissed;but his own writings do not altogether agree with this account.
Dion was angry at all this, and not long after declared open enmity to Dionysius, on hearing what had been done with his wife; on which matter Plato, also, had had some confidential correspondence with Dionysius. Thus it was. After Dion's banishment, Dionysius, when he sent Plato back, had desired him to ask Dion privately, if he would be averse to his wife's marrying another man. For there went a report, whether true, or raised by Dion's enemies, that his marriage was not pleasing to him, and that he lived with his wife on uneasy terms. When Plato therefore came to Athens, and had mentioned the subject to Dion, he wrote a letter to Dionysius speaking of other matters openly, but on this in language expressly designed to be understood by him alone, to the effect that he had talked with Dion about the business, and that it was evident he would highly resent the affront, if it should be put into execution. At that time, therefore, while there were yet great hopes of an accommodation, he took no new steps with his sister, suffering her to live with Dion's child. But when things were come to that pass, that no reconciliation could be expected, and Plato, after his second visit, was again sent away in displeasure, he then forced Arete, against her will, to marry Timocrates, one of his favourites; in this action coming short even of his father's justice and lenity; for he, when Polyxenus, the husband of his sister, Theste, became his enemy, and fled in alarm out of Sicily, sent for his sister, and taxed her, that, being privy to her husband's flight, she had not declared it to him.
But the lady, confident and fearless, made him this reply: "Do you believe me, brother, so bad a wife, or so timorous a woman, that having known my husband's flight, I would not have borne his company, and shared his fortunes? I knew nothing of it; since otherwise it had been my better lot to be called the wife of the exile Polyxenus than the sister of the tyrant Dionysius." It is said, he admired her free and ready answer, as did the Syracusans also her courage and virtue, insomuch that she retained her dignity and princely retinue after the dissolution of the tyranny, and when she died, the citizens, by public decree, attended the solemnity of her funeral. And the story, though a digression from the present purpose, was well worth the telling.
From this time, Dion set his mind upon warlike measures; with which Plato, out of respect for past hospitalities, and because of his age, would have nothing to do. But Speusippus and the rest of his friends assisted and encouraged him, bidding him deliver Sicily, which with lift-up hands implored his help, and with open arms was ready to receive him. For when Plato was staying at Syracuse, Speusippus, being oftener than he in company with the citizens, had more thoroughly made out how they were inclined; and though at first they had been on their guard, suspecting his bold language, as though he had been set on by the tyrant to trepan them, yet at length they trusted him. There was but one mind and one wish or prayer among them all, that Dion would undertake the design, and come, though without either navy, men, horse, or arms; that he would simply put himself aboard any ship, and lend the Sicilians his person and name against Dionysius. This information from Speusippus encouraged Dion, who, concealing his real purpose, employed his friends privately to raise what men they could; and many statesmen and philosophers were assisting him, as, for instance, Eudemus the Cyprian, on whose death Aristotle wrote his Dialogue of the Soul, and Timonides the Leucadian.