Ephialtes, true to his promise, if not to his country, led the Persian Immortals along this narrow way.
"The Story of the Greeks"
H. A. Guerber
As to Ephialtes, the truth of the story, as Aristotle has told it, is this: that having made himself formidable to the oligarchical party, by being an uncompromising asserter of the people's rights in calling to account and prosecuting those who any way wronged them, his enemies, lying in wait for him, by the means of Aristodicus the Tanagraean, privately dispatched him.
"Plutarch-Lives-of-the-noble-Grecians-and-Romans"
Clough, Arthur Hugh
Callisthenes, however, says that he did not agree to any such articles, but that upon the fear this victory gave him, he did in reality thus act, and kept off so far from Greece, that when Pericles with fifty, and Ephialtes with thirty galleys, cruised beyond the Chelidonian isles, they did not discover one Persian vessel.
"Plutarch-Lives-of-the-noble-Grecians-and-Romans"
Clough, Arthur Hugh