Yet still the Ionians, to their masters, were an enigma—and a challenge. All they ever did, it seemed to the Persians, was quarrel. This interminable feuding, which had helped immensely when it came to conquering them, also made them a uniquely wearisome people to rule. Where the Lydians had their bureaucrats and the Judaeans their priests, the Greeks seemed to have only treacherous and floating factions.