History of the Peloponnesian War

For if they had failed to show themselves, they would not have had a chance, but would have certainly been considered vanquished, and have lost the town. As it was, the Athenians might possibly not be inclined to accept their challenge, and their object would be attained without fighting.

And so it turned out. The Athenians formed outside the long walls, and the enemy not attacking, there remained motionless; their generals having decided that the risk was too unequal. In fact most of their objects had been already attained; and they would have to begin a battle against superior numbers, and if victorious could only gain Megara, while a defeat would destroy the flower of their heavy soldiery. For the enemy it was different; as even the states actually represented in his army risked each only a part of its entire force, he might well be more audacious. Accordingly after waiting for some time without either side attacking, the Athenians withdrew to Nisaea, and the Peloponnesians after them to the point from which they had set out. The friends of the Megarian exiles now threw aside their hesitation, and opened the gates to Brasidas and the commanders from the different states looking upon him as the victor and upon the Athenians as having declined the battle—and receiving them into the town proceeded to discuss matters with them; the party in correspondence with the Athenians being paralyzed by the turn things had taken.