The Histories · 1.209

And when he had passed over the Araxes, night having come on he saw a vision in his sleep in the land of the Massagetai, as follows:—in his sleep it seemed to Cyrus that he saw the eldest of the sons of Hystaspes having upon his shoulders wings, and that with the one of these he overshadowed Asia and with the other Europe. Now of Hystaspes the son of Arsames, who was a man of the Achaimenid clan, the eldest son was Dareios, who was then, I suppose, a youth of about twenty years of age, and he had been left behind in the land of the Persians, for he was not yet of full age to go out to the wars. So then when Cyrus awoke he considered with himself concerning the vision: and as the vision seemed to him to be of great import, he called Hystaspes, and having taken him apart by himself he said: "Hystaspes, thy son has been found plotting against me and against my throne: and how I know this…

Herodotus of Halicarnassus · trans. G. C. Macaulay, 1890
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