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.

for it was not likely that they, after subjugating those with whom they had entered into treaty relations together with us, would not do the same to those who were left, if ever they should possibly have the power.

"Again if we had all remained independent we should have had better assurance that they would make no violent change in our status; having, however, the majority under their hands, while still associating with us on an equal footing, they would naturally find it more irksome that our state alone still maintained its equality as compared with the majority that had already yielded, especially since they were becoming more powerful in proportion as we became more isolated.