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.
These privileges your fathers granted to us on account of the valour and zeal we displayed amid those dangers, but you do the very contrary; for with the Thebans, our bitterest enemies, you are come to enslave us.
But calling to witness the gods in whose names we then swore and the gods of your fathers and of our country, we say to you, wrong not the land of Plataea nor violate your oaths, but suffer us to live independent, according as Pausanias granted that to us as our right."