Answer to Philip’s Letter
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).
Then too—nor is this a matter of small importance—quite recently the satraps of Asia Minor sent a force of mercenaries and compelled Philip to raise the siege of Perinthus; but today their hostility is confirmed, the danger, if he reduces Byzantium, is at their very doors, and not only will they eagerly join the war against him.
but they will prompt the king of Persia to become our paymaster and he is richer than all the rest together, and his power to interfere in Greece is such that in our former wars with Sparta, whichever side he joined, he ensured their victory, and so, if he sides with us now, he will easily crush the power of Philip.