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;