History of the Peloponnesian War

The Athenians, when this city was peopled, were at first afraid and thought it to be set up especially against Euboea; because from thence to Cenaeum, a promontory of Euboea, the passage is but short. But it fell out afterwards otherwise than they imagined; for they had no great harm by it, the reason whereof was this.

That the Thessalians, who had the towns of those parts in their power and upon whose ground it was built, afflicted these new planters with a continual war till they had worn them out, though they were many indeed in the beginning. For being the foundation of the Lacedaemonians, everyone went thither boldly, conceiving the city to be an assured one. And chiefly the governors themselves, sent hither from Lacedaemon, undid the business and dispeopled the city by fighting most men away, for that they governed severely and sometimes also unjustly, by which means their neighbours more easily prevailed against them.