Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[205] But for Tiberius, upon his return to Caprein, he fell sick. At first his distemper was but gentle; but as that distemper increased upon him, he had small or no hopes of recovery. Hereupon he bid Euodus, who was that freed-man whom he most of all respected, to bring the children to him, for that he wanted to talk to them before he died. Now he had at present no sons of his own alive for Drusus, who was his only son, was dead; but Drusus's son Tiberius was still living, whose additional name was Gemellus: there was also living Caius, the son of Germanicus, who was the son of his brother [Drusus]. He was now grown up, and had a liberal education, and was well improved by it, and was in esteem and favor with the people, on account of the excellent character of his father Germanicus, who had attained the highest honor among the multitude, by the firmness of his virtuous behavior, by the easiness and agreeableness of his conversing with the multitude, and because the dignity he was in did not hinder his familiarity with them all, as if they were his equals; by which behavior he was not only greatly esteemed by the people and the senate, but by every one of those nations that were subject to the Romans; some of which were affected when they came to him with the gracefulness of their reception by him, and others were affected in the same manner by the report of the others that had been with him; and, upon his death, there was a lamentation made by all men; not such a one as was to be made in way of flattery to their rulers, while they did but counterfeit sorrow, but such as was real; while every body grieved at his death, as if they had lost one that was near to them. And truly such had been his easy conversation with men, that it turned greatly to the advantage of his son among all; and, among others, the soldiery were so peculiarly affected to him, that they reckoned it an eligible thing, if need were, to die themselves, if he might but attain to the government.