When he was yet a mere boy, before he arrived at the age of puberty, during the celebration of the Circensian Games,A.U.C. 806 he performed his part in the Trojan play with a degree of firmness which gained him great applause. In the eleventh year of his age, he was adopted by Claudius, and placed under the tuition of Anneus Seneca, Seneca. the celebrated philosophical writer. had been released from exile in Corsica, shortly before the death of Tiberius. He afterwards fell a sacrifice to the jealousy and cruelty of his former pupil, Nero. who had been made a senator. It is said, that Seneca dreamt the night after, that he was giving a lesson to Caius Caesar.Caligula Nero soon verified his dream, betraying the cruelty of his disposition in every way he could. For he attempted to persuade his father that his brother, Britannicus, was nothing but a changeling, because the latter had saluted him, notwithstanding his adoption, by the name of ,Enobarbus, as usual. When his aunt, Lepida, was brought to trial, he appeared in court as a witness against her, to gratify his mother, who persecuted the accused. On his introduction into the Forum, at the age of manhood, he gave a largess to the people and a donative to the soldiers; for the pretorian cohorts, he appointed a solemn procession under arms, and marched at the head of them with a shield in his hand; after which he went to return thanks to his father in the senate. Before Claudius, likewise, at the time he was consul, he made a speech for the Bolognese, in Latin, and for the Rhodians and people of Ilium, in Greek. He had the jurisdiction of praefect of the city, for the first time, during the Latin festival; during which the most celebrated advocates brought before him, not short and trifling causes, as is usual in that case, but trials of importance, notwithstanding they had instructions from Claudius himself to the contrary. Sooa afterwards, he married Octavia, and exhibited the Circensian games, and hunting of wild beasts, in honour of Claudius.

He was seventeen years of age at the death of that prince,A. U. C. 809—A. D. 87. and as soon as that event was made public, he went out to the cohort on guard between the hours of six and seven; for the omens were so disastrous, that no earlier time of the day was judged proper. On the steps before the palace gate, he was unanimously saluted by the soldiers as their emperor, and then carried in a litter to the camp; thence, after making a short speech to the troops, into the senate-house, where he continued until the evening; of all the immense honours which were heaped upon him, refusing but the title of FATHER OF HIS COUNTRY, on account of his youth.