History of the Peloponnesian War

For this was by far the greatest reverse that ever befell an Hellenic army. They had come to enslave others, and were departing in fear of being enslaved themselves: they had sailed out with prayer and paeans, and now started to go back with omens directly contrary; travelling by land instead of by sea, and trusting not in their fleet but in their heavy infantry. Nevertheless the greatness of the danger still impending made all this appear tolerable.