Plutarch, De Herodoti malignitate
Goodwin, Ed.

Neither ought it to seem strange to any, if he thus bitterly inveighs against the unfortunate; since he reckons amongst enemies and traitors those who were present at the engagement, and together with the other Greeks hazarded their safety. For the Naxians, says he, sent three ships to the assistance of the barbarians; but Democritus, one of their captains, persuaded the others to take the party of the Greeks.¹ So unable he is to praise without dispraising, that if he commends one man he must condemn a whole city or people. But in this there give testimony against him, of the more ancient writers Hellanicus, and of the later Ephorus, one of which says that the Naxians came with six ships to aid the Greeks, and the other with five. And Herodotus convinces himself of having feigned these things. For the writers of the Naxian annals say, that they had before beaten back Megabates, who came to their island with two hundred ships, and after that had put to flight the general Datis, [p. 361] who had set their city on fire. Now if, as Herodotus has elsewhere said, the barbarians burned their city so that the men were glad to save themselves by flying into the mountains, most surely had they just cause rather to send aid to the destroyers of their country than to help the protectors of the common liberty. But that he framed this lie not so much to honor Democritus, as to cast infamy on the Naxians, is manifest from his omitting and wholly passing over in silence the valiant acts then performed by Democritus, of which Simonides gives us an account in this epigram:

When as the Greeks at sea the Medes did meet,
And had near Salamis a naval fight,
Democritus as third led up the fleet,
Charging the enemy with all his might;
He took five of their ships, and did another,
Which they had taken from the Greeks, recover.