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.
If, however, you will be zealous, we will stand by you; for neither should we act rightly in changing, nor should we find others more congenial.
Wherefore deliberate well, and endeavour to keep a supremacy in the Peloponnese no less than your fathers bequeathed to you.