And this is easily proved by a short calculation. I pass over Olynthus and Methone and Apollonia and the two and thirty cities in or near Thrace , all of which Philip has destroyed so ruthlessly that a traveler would find it hard to say whether they had ever been inhabited. I say nothing of the destruction of the important nation of the Phocians. But how stands the case of the Thessalians? Has he not robbed them of their free constitutions and of their very cities, setting up tetrarchies in order to enslave them, not city by city, but tribe by tribe?