Olynthiac 2
Demosthenes
Demosthenes. Vol. I. Olynthiacs, Philippics, Minor Public Speeches, Speech Against Leptines, I-XVII, XX. Vince, J. H., translator. Cambridge, MA: Harvard University Press, 1930 (printing).
I find that next he won the friendship of the Olynthians by capturing Potidaea, which was yours, and thus wronging you, his former allies,[*](If the Greek is sound, this must allude to Philip’s offer of alliance with Athens ten years before. But perhaps we should omit ὑμᾶς with Blass. The allies will then be the Potidaeans, as the Scholiast explains.) in presenting it to them. Lastly he has won over the Thessalians by promising to bestow Magnesia upon them and by undertaking to conduct the Phocian war[*](The Sacred War of 355-346.) in their interests. In a word, he has hoodwinked everyone that has had any dealings with him; he has played upon the folly of each party in turn and exploited their ignorance of his own character. That is how he has gained his power.
Now even as he has raised himself by these arts, while every community imagined that they were to be the recipients of his favors, so by these same arts he is bound to be brought low again now that the utter selfishness of his conduct has been amply demonstrated. Yes, men of Athens, this is the turning point of Philip’s career. If not, let someone step up and prove to me—or rather to you—that my words are untrue, or that those who have been once deceived will continue to trust him, or that the Thessalians who stooped to become his slaves would not now welcome their emancipation.
Again, if anyone here admits the truth of this, but fancies that Philip will remain master of the situation, being already in possession of the fortresses and harbors and other points of vantage, he is mistaken. For when a league is knit together by goodwill, when all the allied states have the same interests, then the individual members are willing to remain steadfast, sharing the toil and enduring the hardships; but when a man has gained power, as Philip has, by rapacity and crime, then the first pretext, some trifling slip, overthrows and shatters all.