On the other hand Aegialeus 2, who some said died childless, was Phoroneus' brother. But then again this circumstance tells less than it could be assumed. Also Io , being a daughter of Inachus, may be called sister of Phoroneus, but her parentage is uncertain. Hermes reveals important secret to mortals. During this period they spoke the same tongue until Hermes , who is the guide of speech, explained to them the secret of languages.
Mortals use secret to quarrel.
And with this knowledge Discord arose among mortals and they divided into nations. Phoroneus, first ruler. From this division came the need for government, and so Zeus gave over the first rule to Phoroneus, because he had being the first to make offerings to Hera , building a temple for her, or because he first made arms for her. And either because he was a pious man, or because he understood that order cannot be achieved without arms as long as division prevails among mortals, he obtained from Zeus the authority to rule. Phoroneus invents the city.