Fire signals of an attack were also raised toward Thebes, but the Plataeans in the city at once displayed a number of others, prepared beforehand for… - Thucydides

(Archidamus:) The allies of the Athenians are not less numerous; they pay them tribute too; and war is not an affair of arms, but of money which gives to arms their use, and which is needed above all things when a continental is fighting against a maritime power:

let us find money first, and then we may safely allow our minds to be excited by the speeches of our allies. We, on whom the future responsibility, whether for good or evil, will chiefly fall, should calmly reflect on the consequences which may follow.

(Book 1 Chapter 83.2-3)

It is useless to attack men who could not be controlled even if conquered, while failure would leave us in an even worse position.

For these reasons or reasons very like them he was killed
who, of all the Hellenes in my time, least deserved to come
to so miserable an end, since the whole of his life had been devoted
to the study and the practice of virtue.