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.

The Peloponnesians, after ravaging the plain, advanced into the district called Paralusl as far as Laurium, where are the silver mines of the Athenians. And first they ravaged that part of this district which looked towards the Peloponnesus, and afterwards the part facing Euboea and Andros.

But Pericles, who was general, still held to the same policy as during the earlier invasion, insisting that the Athenians should not take the field against them.