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.
Having thus debated the matter together, and encouraged one another, they proceeded to make preparations for the war no less than before; and the ten ambassadors who had been sent to Samos by the Four Hundred, hearing of this when they were now at Delos, remained quiet there.