VELLEIUS PATERCULUS, History of Rome
[II.XCIV] Hoc tractu temporum, Ti. Claudius Nero, quo trimo, ut praediximus, Liuia, Drusi Claudiani filia, despondente Ti. Nerone, cui ante nupta fuerat, Caesari nupserat, innutritus caelestium praeceptorum disciplinis, iuuenis genere, forma, celsitudine corporis, optimis studiis maximoque ingenio instructissimus, qui protinus quantus est, sperari potuerat uisuque praetulerat principem, quaestor undeuicesimum annum agens capessere coepit rem publicam maximamque difficultatem annonae ac rei frumentariae inopiam ita Ostiae atque in Vrbe, mandatu uitrici, moderatus est, ut per id quod agebat quantus euasurus esset eluceret. Nec multo post, missus ab eodem uitrico cum exercitu ad uisendas ordinandasque quae sub Oriente sunt prouincias, praecipuis omnium uirtutum experimentis in eo tractatu editis, cum legionibus ingressus Armeniam, redacta ea in potestatem populi Romani regnum eius Artauasdi dedit. Cuius rex quoque Parthorum tanti nominis fama territus, liberos suos ad Caesarem misit obsides.
	[2.94] At this period Tiberius Claudius Nero, in his nineteenth year, began his public life as quaestor. I have already told how, when he was three years of age, his mother Livia, the daughter of Drusus Claudianus, had become the wife of Caesar, her former husband, Tiberius Nero, himself giving her in marriage to him. Nurtured by the teaching of eminent praeceptors, a youth equipped in the highest degree with the advantages of birth, personal beauty, commanding presence, an excellent education combined with native talents, Tiberius gave early promise of becoming the great man he now is, and already by his look revealed the prince. Now, acting on the orders of his stepfather, he so skillfully regulated the difficulties of the grain supply at Ostia and in the city that it was apparent from his execution of this commission how great he was destined to become. Shortly afterwards he was sent by his stepfather with an army to visit the eastern provinces and restore them to order, and in that part of the world gave splendid illustration of all his strong qualities. Entering Armenia with his legions, he brought it once more under the sovereigntiy of the Roman people, and gave the kingship to Artavasdes. Even the king of the Parthians, awed by the reputation of so great a name, sent his own children as hostages to Caesar.