History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
"But we are not come now, easy though it be to denounce the Athenian state, to declare before those who know already how many are its misdeeds; but much more to blame ourselves, because, though we have warning examples in the way that the Hellenes over there have been enslaved because they would not defend one another, and though the same sophisms are now practised upon us—restorings of Leontine kinsmen and succourings of Egestaean allies!—we are unwilling to combine together and with more spirit show them that here are not Ionians nor yet Hellespontines and islanders, who are always taking some new master, Persian or whoever it may be, and continue in a state of slavery, but Dorians, free men sprung from independent Peloponnesus, and now dwelling in Sicily.
Or are we waiting until we shall be taken one at a time, city by city, when we know that in this way only can we be conquered, and when we see them resorting to this policy, endeavouring to cause division among some of us by means of cunning words, to set others at war one with another by the hope of obtaining allies, and to ruin others in whatever way they can by saying something alluring to each? And do we think that, when a distant compatriot perishes before us, the same danger will not come also to ourselves, but rather that whoever before us meets with disaster merely incurs misfortune by himself alone?
"And if the thought has occurred to anyone that it is the Syracusans, not himself, who are enemies to the Athenians, and thinks it preposterous that he should incur danger for our country, let him reflect that it will not be chiefly for our country, but equally for his own at the same time that he will fight in our land, and with the greater safety, too, inasmuch as he will enter the contest, not when we have already been ruined, and not isolated himself, but having us as allies; and that the object of the Athenians is not to punish the enmity of the Syracusans, but having us as a pretext to make your ' friendship ' still more secure.
If, moreover, anyone is envious, or even afraid of Us—for greater states are exposed to both these passions—and for this reason wishes that the Syracusans shall be humbled, indeed, in order that we may be sobered, but shall survive for the sake of his own safety, he indulges a wish that is not within human power to attain. For it is not possible for the same person to be in like measure the controller of his own desires and of Fortune;