IV. The following anecdote seems to prove that Demetrius when young was of a kind and loving nature. Mithridates, the son of Ariobarzanes, was his friend and companion, and was a good subject of Antigonus, of thorough and unsuspected loyalty, but at length incurred the suspicion of Antigonus in consequence of a dream. Antigonus dreamed that he walked over a large and fair plain, sowing it with gold dust; and that shortly afterwards, returning that way again, he found nothing but stubble left. While grieving over this he heard some men say that Mithridates had gone away to Pontus on the Euxine, after having gathered the golden harvest. Antigonus was much disturbed at this vision, and after having compelled his son to swear that he would keep silence about it, told him of the vision, and added that he had made up his mind to make away with the man. Demetrius was greatly grieved at hearing this, and when the young man, as he was wont to do, again joined him, and spent the day with him, Demetrius dared not tell him by word of mouth what danger he was in, because of the oath; but he drew him aside into a quiet place, and there, as soon as they were alone together, he wrote on the ground with the but-end of his spear, in sight of the other, the words "Fly, Mithridates!" Mithridates understood his meaning, and ran away that very night to Cappadocia. Not long afterwards, he showed Antigonus what was the real meaning of his dream; for he made himself master of an extensive territory, and became the founder of the dynasty of the kings of Pontus, which was overthrown by the Romans in about the eighth generation after him. By this example we may perceive the noble and loyal nature of Demetrius.