History of the Peloponnesian War

Therefore if we fall upon them suddenly and by night, I think, with the help of those within, if any be left there that will take our part, we may be able to possess ourselves of the city.

And we shall never fear the danger if we but think this: that all stratagems of war whatsoever are no more but such occasions as this, which, if a commander avoid in himself and take the advantage of them in the enemy, he shall for the most part have good success.