History of the Peloponnesian War

Nevertheless the Lacedaemonians first sent to Chios Phrynis, one of the Perioeci, to see whether they had as many ships as they said, and whether their city generally was as great as was reported; and upon his bringing word that they had been told the truth, immediately entered into alliance with the Chians and Erythraeans, and voted to send them forty ships, there being already, according to the statement of the Chians, not less than sixty in the island.