History of the Peloponnesian War

And afterwards receding far from that course which in the administration of the state was used by the people, saving that for Alcibiades' sake they recalled not the outlaws, in other things they governed the commonwealth imperiously, and not only slew some, though not many, such as they thought fit to be made away, and imprisoned some, and confined others to places abroad, but also sent heralds to Agis, king of the Lacedaemonians, who was then at Deceleia, signifying that they would come to composition with him, and that now he might better treat with them than he might before with the unconstant people.

But he, not imagining that the city was yet in quiet nor willing so soon to deliver up their ancient liberty, but rather that if they saw him approach with great forces they would be in tumult, not yet believing fully but that some stir or other would arise amongst them, gave no answer at all to those that came from The Four Hundred touching the composition, but having sent for new and great forces out of Peloponnesus, came down himself not long after, both with the army at Deceleia and those new comers, to the Athenian walls, hoping that they would fall into his hands according to his desire, at least the more easily for their confusion, or perhaps at the very first shout of their voices, in respect of the tumult that in all likelihood was to happen both within and without the city. For, as for the long walls, in regard of the few defendants likely to be found upon them, he thought he could not fail to take them.