Ab urbe condita
Titus Livius (Livy)
Livy. History of Rome, Volumes 1-2. Roberts, Canon, Rev, translator. London, New York: J. M. Dent and Sons; E. P. Dutton and Co., 1912.
He proceeded towards the nearest cave, to see if any tracks pointed in that direction, but he found that every hoof-mark led from the cave and none towards it. Perplexed and bewildered he began to drive the herd away from so dangerous a neighbourhood. Some of the cattle, missing those which were left behind, lowed as they often do, and an answering low sounded from the cave.
Hercules turned in that direction, and as Cacus tried to prevent him by force from entering the cave, he was killed by a blow from Hercules' club, after vainly appealing for help to his comrades. The king of the country at that time was Evander, a refugee from Peloponnesus, who ruled more by personal ascendancy than by the exercise of power.
He was looked up to with reverence for his knowledge of letters —a new and marvellous thing for uncivilized men-but he was still more revered because of his mother, who was believed to be a divine being and regarded with wonder, by all as an interpreter of Fate, in the days before the arrival of the Sibyl in Italy.
This Evander, alarmed by the crowd of excited shepherds standing round a stranger whom they accused of open murder, ascertained from them the nature of his act and what led to it. As he observed the bearing and stature of the man to be more than human in greatness and august dignity, he asked who he was.
When he heard his name, and learnt his father and his country, he said, “ Hercules, son of Jupiter, hail! My mother, who speaks truth in the name of the gods, has prophesied that thou shalt join the company of the gods, and that here a shrine shall be dedicated to thee, which in ages to come the most powerful nation in all the world shall call their Ara Maxima and honour with thine own special worship.”
Hercules grasped Evander's right hand and said that he took the omen to himself and would fulfil the prophecy by building and consecrating the altar.
Then a heifer of conspicuous beauty was taken from the herd, and the first sacrifice was offered; the Potitii and Pinarii, the two principal families in those parts, were invited by Hercules to assist in the sacrifice and at the feast which followed.