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.
"On many other occasions in the past I have realized that a democracy is incompetent to govern others, but more than ever to-day, when I observe your change of heart concerning the Mytilenaeans.
The fact is that, because your daily life is unaffected by fear and intrigue in your relations to each other,[*](cf. 2.37.2.) you have the same attitude towards your allies also, and you forget that whenever you are led into error by their representations or yield out of pity, your weakness involves you in danger and does not win the gratitude of your allies. For you do not reflect that the empire you hold is a despotism[*](cf. 2.63.2.) imposed upon subjects who, for their part, do intrigue against you and submit to your rule against their will, who render obedience, not because of any kindnesses you may do them to your own hurt, but because of such superiority as you may have established by reason of your strength rather than of their goodwill.