History of the Peloponnesian War

If the Athenians lurking in some obscure place had done these wrongs unto the Grecians, we should then have needed to prove the same before you as to men that knew it not. But now what cause have we to use long discourse when you see already that some are brought into servitude, and that they are contriving the like against others, and especially against our confederates, and are themselves, in case war should be made against them, long since prepared for it?