History of the Peloponnesian War

Nicias observing this, and seeing that the enemy's strength and their own difficulties were every day increasing, sent, on his side also, to Athens; having, indeed, on many other occasions sent messengers at the time of their several operations, but doing so then especially, because he thought that they were in a perilous condition, and that unless those at home recalled them as quickly as possible, or sent out no small reinforcement, there was no hope of preservation for them.