This was what he did. For myself, there is no need that I should write in general about Egypt, but what I know about the Nile through verifying statements from many sources I am bound to mention. It clearly rises in Mount Atlas. This lies in Macennitis, close to the Western ocean itself, and towers far above all mountains, wherefore the poets have called it "Pillar of the Sky." No one ever ascended its summits nor saw its topmost peaks. Hence it is always covered with snow, which in summer time sends down great quantities of water. The whole country about its base is in general marshy, but at this season becomes even more so, with the result that it swells the size of the Nile at harvest time. This is the river's source, as is evidenced by the crocodiles and other beasts that are born alike on both sides of it. Let no one be surprised that we have made pronouncements unknown to the ancient Greeks. The Macennitae live near lower Mauretania and many of the people who go on campaigns there also visit Atlas. It is thus that the matter stands.
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Plautianus, who enjoyed the special favor of Severus and had the authority of prefect, besides possessing the fullest and greatest influence on earth, had put to death many men of renown and his own peers [Lacuna] [After killing Aemilius Saturninus he took away all the most important prerogatives belonging to the minor officers of the Pretorians, his subordinates, in order that none of them might be so elated by his position of eminence as to lie in wait for the captaincy of the body-guards. Already it was his wish to be not simply the only but a perpetual prefect.] He wanted everything, asked everything from everybody, and got everything. He left no province and no city unplundered, but sacked and gathered everything from all sides. All sent a great deal more to him than they did to Severus. Finally he sent centurions and stole tiger-striped horses sacred [
] to the Sun God from the island in the Red Sea. This mere statement, I think, must instantly make plain all his officiousness and greediness. Yet, on second thought, I will add one thing more. At home he castrated one hundred nobly born Roman citizens, though none of us knew of it until after he was dead. From this fact one may comprehend the extent alike of his lawlessness and of his authority. He castrated not merely boys or youths, but grown men, some of whom had wives; his object was that Plautilla his daughter (whom Antoninus afterward married) should be waited upon entirely by eunuchs [and also have them to give her instruction in music and other branches of art. So we beheld the same persons eunuchs and men, fathers and impotent, gelded and bearded. In view of this one might not improperly declare that Plautianus had power beyond all men, over even the emperors themselves. For one thing, his portrait statues were not only far more numerous but also larger than theirs, and this not simply in outside cities but in Rome itself, and they were at this time reared not merely by individuals but by no less a body than the senate itself. All the soldiers and the senators took oaths by his Fortune and all publicly offered prayer for his preservation.
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The person principally responsible for this state of affairs was Severus himself. He yielded to Plautianus in all matters to such a degree that the latter occupied the position of emperor and he himself that of prefect. In short, the man knew absolutely everything that Severus said and did, but not a person was acquainted with any of Plautianus's secrets. The emperor made advances to his daughter on behalf of his own son, passing by many other maidens of high rank. He appointed him consul and virtually showed an anxiety to have him for successor in the imperial office. Indeed, once he did say in a letter: "I love the man so much that I pray to die before he does.">[
[Lacuna] so that [Lacuna] some one actually dared to write to him as to a fourth Caesar. Though many decrees in his honor were passed by the senate he accepted only a few of them, saying to the senators: "It is through your hearts that you show your love for me, not through your decrees."