History of the Peloponnesian War

after we had settled the rest of Boeotia and had occupied Plataea and other places of which we got possession by driving out a mixed population,[*](Strabo mentions Pelasgians, Thracians, Hyantians.) these Plataeans disdained to submit to our leadership, as had been agreed upon at first, and separating themselves from the rest of the Boeotians and breaking away from the traditions of our fathers went over to the Athenians as soon as an attempt was made to force them into obedience, and in conjunction with the Athenians did us much harm, for which they also suffered in return.