History of the Peloponnesian War

For they were suffering with sickness from two different causes, both because this was the season of the year at which men are most liable to disease, and at the same time, too, because the position in which they were encamped was marshy and unfavourable; while they were also distressed because every thing else appeared hopeless to them. Demosthenes then, was of opinion that they ought not to stay any longer;

but, according to the plan with which he had hazarded the attack on Epipolae, since that had failed, he gave his vote for departing, and not wasting the time, while the sea might yet be crossed, and while, as regarded forces, they might command the superiority with the squadron that had lately joined them, at any rate.