History of the Peloponnesian War

For ourselves, all who have already had dealings with the Athenians require no warning to be on their guard against them. The states more inland and out of the highway of communication should understand that if they omit to support the coast powers, the result will be to injure the transit of their produce for exportation and the reception in exchange of their imports from the sea; and they must not be careless judges of what is now said, as if it had nothing to do with them, but must expect that the sacrifice of the powers on the coast will one day be followed by the extension of the danger to the interior, and must recognize that their own interests are deeply involved in this discussion.