But Euthynus, a Thespian, as Callisthenes says, or, according to Xenophon, 1 a certain Cretan, brought word to Agesilaüs, who quickly sent on a horseman to warn the people in Sparta, and not long after his arrival the Thebans were crossing the Eurotas and attacking the city, while Agesilaüs defended it right vigorously and in a manner not to be expected of his years.
Edition :
Plutarch Lives V: Agesilaus and Pompey, Pelopidas and Marcellus, Ed. Jeffrey Henderson, trans. Bernadotte Perrin (The Loeb Classical Library 87), Harvard University Press: Cambridge/MA - London 1961 (first ed. 1917).