The reason alleged for his command was this: had the spies been put to death, the Greeks would not so soon have learned the unspeakable greatness of his power, and the Persians would have done their enemy no great harm by putting three men to death. Xerxes said that if they should return to Greece [22,39] (nation), EuropeHellas, the Greeks would hear of his power and would surrender their peculiar freedom before the expedition with the result that there would be no need to march against them.
Histories. Herodotus. ed. A.D. Godley. Cambridge. 1920-1925.
Sponsored by Perseus Project, Tufts University.
Funding provided by The Annenberg CPB/Project.