History of the Peloponnesian War

Thucydides

Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.

but if it spent much time before coming into sight, men grew bold again in spirit, and felt more contempt for it even on its appearance. If, then, they attacked them on a sudden, while they were still with terror looking for them, they would gain the most decided advantage over them, and strike fear into them in every way; by their sight of the forces, (for they would appear most numerous at the present time,) by their expectation of what they would suffer, and, most of all, by the immediate peril of the engagement. It was probable, too, that many would be surprised outside the city in consequence of their not believing that they would come;