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.
"Considering, then, Lacedaemonians, the zeal and sagacity of judgment which we displayed at that time, do we deserve to be regarded with this excessive jealousy by the Hellenes just on account of the empire we possess ?
And indeed we did not acquire this empire by force, but only after you had refused to continue to oppose what was left of the barbarian forces, and the allies came to us and of their own accord asked us to assume the leadership.
It was under the compulsion of circumstances that we were driven at first to advance our empire to its present state, influenced chiefly by fear, then by honour also, and lastly by self-interest as well;
and after we had once incurred the hatred of most of our allies, and several of them had already revolted and been reduced to subjection, and when you were no longer friendly as before but suspicious and at variance with us, it no longer seemed safe to risk relaxing our hold. For all seceders would have gone over to you.
And no man is to be blamed for making the most of his advantages when it is a question of the gravest dangers.
"At any rate you, Lacedaemonians, in the exercise of your leadership over the Peloponnesian states regulate their politiesl according to your own advantage; and if in the Persian war you had held out to the end in the hegemony and had become unpopular in its exercise, as we did, you would certainly have become not less obnoxious to the allies than we are, and would have been compelled either to rule them with a strong hand or yourselves to risk losing the hegemony.
Thus there is nothing remarkable or inconsistent with human nature in what we also have done,just because we accepted an empire when it was offered us, and then, yielding to the strongest motives—honour, fear, and self-interest—declined to give it up. Nor, again, are we the first who have entered upon such a course, but it has ever been an established rule that the weaker is kept down by the stronger. And at the same time we thought we were worthy to rule, and used to be so regarded by you also, until you fell to calculating what your interests were and resorted as you do now, to the plea of justice—which no one, when opportunity offered of securing something by main strength, ever yet put before force and abstained from taking advantage.
And they are to be commended who, yielding to the instinct of human nature to rule over others, have been more observant of justice than they might have been, considering their power.
At least, if others should seize our power, they would, we think, exhibit the best proof that we show some moderation; but in our case the result of our very reasonableness is, perversely enough, obloquy rather than commendation.