XLVII. At last famine, as usually happens, produced a pestilence, because the men ate whatever they could find; and Demetrius, after losing no less than eight thousand, gave up his project, and led back the remainder. He proceeded to Tarsus, and would, if possible, have abstained from living on the neighbouring country which belonged to Seleukus, and so giving him an excuse for attacking him. However, this was impossible, as his soldiers were reduced to the last extremities of want, and Agathokles had fortified the passes of the Taurus range of mountains. Demetrius now wrote a letter to Seleukus, containing a long and piteous account of his misfortunes, and begging Seleukus as a relative to take pity on one who had suffered enough to make even his enemies feel compassion for him. Seleukus seems to have been touched by this appeal. He wrote to his generals, ordering them to show Demetrius the respect due to royalty, and to supply his troops with provisions; but now Patrokles, who was thought to be a man of great wisdom, and who was a friend of Seleukus, pointed out to him that the expense of feeding the troops of Demetrius was not a matter of great importance, but that it was a grievous error to allow Demetrius himself to remain in his territory. He reminded him that Demetrius had always been the most turbulent and enterprising of princes, and that he was now in a position which would urge the most moderate and peaceable of men to deeds of reckless daring and treachery. Struck by this reasoning, Seleukus started for Cilicia in person, at the head of a large army. Demetrius, astonished and alarmed at this rapid change in Seleukus's attitude, retreated to a strong position at the foot of the Taurus mountains, and in a second letter requested Seleukus to allow him to conquer some native territory occupied by independent tribes, in which he might repose after his wanderings, or at least to let him maintain his forces in Cilicia during the winter, and not to drive him out of the country and expose him to his enemies in a destitute condition.