But the next business of my history is to inquire who this Cyrus was who took down the power of Croesus, and how the Persians came to be the rulers of Asia . I mean then to be guided in what I write by some of the Persians who desire not to magnify the story of Cyrus but to tell the truth, though there are no less than three other accounts of Cyrus which I could give. After the Assyrians had ruled Upper Asia for five hundred and twenty years, the Medes were the first who began to revolt from them. These, it would seem, proved their bravery in fighting for freedom against the Assyrians; they cast off their slavery and won freedom. Afterwards, the other subject nations, too, did the same as the Medes.