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.

Upon hearing this, the Athenians straightway voted that the generals should have full powers, with regard both to the size of the armament and to the whole expedition, to act in whatever way might seem to them best for Athens.

After this the preparation was begun; and they sent notice to their allies and made levies at home. Now the city had just recovered from the plague and from the continuous war, both in point of the multitude of young men who had grown up and of the money that had accumulated in consequence of the truce, so that everything was provided more easily. So the Athenians were engaged in preparation.