History of the Peloponnesian War

To this effect spoke the Mytilenaeans. When the Lacedaemonians and the confederates had heard them, they admitted the force of their arguments, and received the Lesbians into alliance. And with regard to the invasion of Attica, they told the confederates who were present to go with all speed to the isthmus with two thirds of their forces, to put it into execution, and were themselves the first to arrive there, and proceeded to get ready at the isthmus machines for hauling their ships with a view to transporting them from Corinth to the sea on the side of Athens, and making an attack both by sea and land at the same time.

They, then, were heartily engaged in those operations; but the rest of the confederates were slow in assembling, as they were occupied in gathering in their harvest, and sick of making expeditions.