History of the Peloponnesian War

Thucydides

Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.

and in addition to oaths, you could not receive a greater assurance than in the case of men whose actions, when viewed in the light of their words, convey a necessary conviction that it is even expedient for them to do as they have said.

But if, when I advance these arguments, you say that you have not the power to comply with them, and yet claim, on the strength of your kind wishes, to incur no harm by refusing;

and allege that freedom does not appear to you unaccompanied with danger, and that it is right to offer it to those who have the power to accept it, but to force it on no one against his will: in that case, I will take the gods and heroes of your country to witness, that after coming for your benefit, I cannot prevail upon you to accept it; and will endeavour to compel you by ravaging your country. Nor shall I then think that I am doing wrong, but that reason is on my side, on the ground of two compulsory considerations;