History of the Peloponnesian War

"Again, when the barbarian came against Greece, they say that they were the only part of the Boeotians that did not Medize; and it is on this point that they most pride themselves, and abuse us.

But we say that they did not Me-dize, because the Athenians did not either; but that in the same way, when the Athenians afterwards attacked the Greeks, they were the only people that Atticized.