History of the Peloponnesian War
Thucydides
Thucydides. History of the Peloponnesian War. Crawley, Richard, translator. London and Toronto: J. M. Dent and Sons Ltd.; New York: E. P. Dutton and Co., 1914.
So the Epidamnians went to Corinth, and delivered over the colony in obedience to the commands of the oracle. They showed that their founder came from Corinth, and revealed the answer of the god; and they begged them not to allow them to perish, but to assist them.
This the Corinthians consented to do. Believing the colony to belong as much to themselves as to the Corcyraeans, they felt it to be a kind of duty to undertake their protection. Besides, they hated the Corcyraeans for their contempt of the mother country.