History of the Peloponnesian War

Thucydides

Thucydides. The Peloponnesian War. London, J. M. Dent; New York, E. P. Dutton. 1910.

In this way Brasidas hurried through Thessaly before any one could be got ready to stop him, and reached Perdiccas and Chalcidice.

The departure of the army from Peloponnese had been procured by the Thracian towns in revolt against Athens and by Perdiccus, alarmed at the successes of the Athenians.

The Chalcidians thought that they would be the first objects of an Athenian expedition, not that the neighbouring towns which had not yet revolted did not also secretly join in the invitation; and Perdiccas also had his apprehensions on account of his old quarrels with the Athenians, although not openly at war with them, and above all wished to reduce Arrhabaeus king of the Lyncestians.

It had been less difficult for them to get an army to leave Peloponnese, because of the ill fortune of the Lacedaemonians at the present moment.