History of the Peloponnesian War

A single defeat at sea is in all likelihood their ruin: should they hold out, in that case there will be the more time for us to exercise ourselves in naval matters; and as soon as we have arrived at an equality in science, we need scarcely ask whether we shall be their superiors in courage. For the advantages that we have by nature they cannot acquire by education; while their superiority in science must be removed by our practice.

The money required for these objects shall be provided by our contributions: nothing indeed could be more monstrous than the suggestion that, while their allies never tire of contributing for their own servitude, we should refuse to spend for vengeance and self-preservation the treasure which by such refusal we shall forfeit to Athenian rapacity, and see employed for our own ruin.

We have also other ways of carrying on the war, such as revolt of their allies, the surest method of depriving them of their revenues, which are the source of their strength, and establishment of fortified positions in their country, and various operations which cannot be foreseen at present. For war of all things proceeds least upon definite rules, but draws principally upon itself for contrivances to meet an emergency; and in such cases the party who faces the struggle and keeps his temper best meets with most security, and he who loses his temper about it with correspondent disaster.