History of the Peloponnesian War

Yet after losing most of their fleet besides other forces in Sicily, and with faction already dominant in the city, they could still for three years make head against their original adversaries, joined not only by the Sicilians, but also by their own allies nearly all in revolt, and at last by the king's son, Cyrus, who furnished the funds for the Peloponnesian navy. Nor did they finally succumb till they fell the victims of their own intestine disorders.

So superfluously abundant were the resources from which the genius of Pericles foresaw an easy triumph in the war over the unaided forces of the Peloponnesians.