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.
Reports of him had been brought from Erythraea to Paches and the Athenians, and now kept coming from all quarters. For since Ionia was unfortified, a great alarm arose everywhere lest the Peloponnesians, while following the coast—even if, under the circumstances,[*](ie. since they only crusing.) they had no intention of remaining—might in passing fall upon their cities and plunder them. And finally the Paralus and the Salaminia brought the news that they had themselves seen him at Clarus. So Paches eagerly undertook the pursuit;
and he followed him as far as the island of Patmos, but when it was clear that Alcidas could no longer be overtaken he turned back again. And since he had not come up with the Peloponnesian fleet in the open sea, he considered it a piece of good fortune that they had not been overtaken in some port and compelled to set up a camp there, thus giving the Athenian fleet the trouble of watching and blockading them.[*](Such a blockade would not only have been costly, but would also have kept the fleet from carrying on its work at Lesbos.)