Dion
Plutarch
Plutarch. Plutarch's Lives, Vol. VI. Perrin, Bernadotte, translator. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd., 1918.
They therefore no longer abused Dion one by one and secretly, but all together and openly, saying that he was manifestly enchanting and bewitching Dionysius with Plato’s doctrines, in order that the tyrant might of his own accord relinquish and give up the power, which Dion would then assume and devolve upon the children of Aristomache, whose uncle he was.
And some pretended to be indignant that the Athenians, who in former times had sailed to Sicily with large land and sea forces, but had perished utterly without taking Syracuse,
should now, by means of one sophist, overthrow the tyranny of Dionysius, by persuading him to dismiss his ten thousand body-guards, and abandon his four hundred triremes and his ten thousand horsemen and his many times that number of men-at-arms, in order to seek in Academic philosophy for a mysterious good, and make geometry his guide to happiness, surrendering the happiness that was based on dominion and wealth and luxury to Dion and Dion’s nephews and nieces.