Philo: On the Confusion of Tongues

III. (6) And there is also another story akin to this, related by the deviser of fables, concerning the sameness of language existing among animals: for they say that formerly, all the animals in the world, whether land animals, or aquatic ones, or winged ones, had but one language, and that, just as among men Greeks speak the same language as Greeks, and the present race of barbarians speaks the same language as barbarians, exactly in the same manner every animal was able to converse with every other animal with which it might meet, and with which it did anything, or from which it suffered anything, so that they sympathised with one another at their mutual misfortunes, and rejoiced whenever any of them met with any good fortune; (7) for they could impart their pleasures and their annoyances to one another by their sameness of language, so that they felt pleasure together and pain together; and this similarity of manners and union of feelings lasted, until being sated with the great abundance of good things which they enjoyed, as often happens, they were at last drawn on to a desire of what was unattainable, and even sent an embassy to treat for immortality, requesting to be released from old age, and to be always endowed with the vigour of youth, saying, that already one animal of their body, and that a reptile, the serpent, had received this gift; for he, having put off old age, was allowed again to grow young; and that it was absurd for the more important animals to be left behind by an inferior one, or for their whole body to be distanced by one.

(8) However, they suffered the punishment suitable to their audacity, for they immediately were separated in their language, so that, from that time forth, they have not been able to understand one another, by reason of the difference in the dialects into which the one common language of them all had been divided.