What philosopher raised the Roman emperor Nero?
Let me disagree with your definition of Nero as a moral monster. It was rightly noticed here, he was no worse, and perhaps even a little better than the others. Simply, as they say, he got into history, and it was clearly beneficial for someone. Suetonius and Tacitus told us the most about Nero, and the latter can be considered a contemporary of the emperor, who was also a senator, and there is no doubt that he did not like the role of the honorary senecure of this organ.
Now it is difficult to figure out where the truth is and where the fiction is, but there is no doubt that paints were added. The Church added these same colors centuries later, during the first persecutions of Christians. But the predecessor of Nero, the Emperor Claudius, who wrote out no less death sentences, and at the request of his wife and freedmen, was all so white and fluffy, because he punished more than the first for the enmity between Jews and Christians, which interfered with the peaceful way of life in Rome. It's worth thinking about it already.
And if all this is true, there may be extenuating circumstances for a person who lived two thousand years ago.
Let's look at some of Nero's worst sins that we know of.
The murder of Agrippina's own mother. Personally, I have no doubt that this fact took place. Agrippina from the very birth did not participate in the upbringing of her son, she was not up to this, she devoted herself to a riotous life at the court of her brother Caligula, giving her son to her husband. And later, she remembered about him only as a tool, then to obtain an inheritance, or even to seize power, which she always did not succeed in successfully. On the way of Nero to the emperor, many people were killed, who were a hindrance in this. And all this Agrippina, and not at all for the sake of her son, tried, she simply did not discern the inclinations of a leader in him, relying on his melancholy, love of art, and therefore on sole rule. After all, she did not even spare her husband Claudius, who adopted Nero and made him his heir, by which he signed his own death warrant, since he was no longer needed. The future widow simply talked about him with Lukusta, that is, she poisoned him, and already that night the Praetorians declared Nero emperor. Otherwise, it could not be because their commander was Sextus Afranius Burr, his former tutor. So, the mistress of her brother, the wife of her own uncle, a woman who was not inferior in debauchery to Messalina herself, and even a murderer of loved ones! So maybe Nero rid the world of the devil? Yes, and they were far from each other, and from the very birth of Nero, so there is no need to talk about any filial feelings.
The murder of his ex-wife Octavia. It's hard for me to find excuses here. A woman who could leave a mark on history, nevertheless, the own daughter of Claudius and Messalina, the wife of the emperor, although for a short time, she did not deserve any mention of her life from the chroniclers. Octavia is like a schoolmate from the distant past, whose voice is quieter, and the image is more and more vague. Apparently and in truth stood out for her virtue, the only mentions of herself. Yes, and he did not love the people, unlike Nero, in whose youthful heart Akta was, and already in the matured man, Poppaea Sabina, a noble beauty of that time, firmly settled. I will assume that the existence of Octavia is like a silent reproach to Nero, who more and more reveled in power, plunging into the world of debauchery, including same-sex love. Perhaps he did not give the order at all, perhaps it was just that someone did a kind favor, relieving Vladyka of remorse. Sixes were enough at all times.
The murder of Octavia Britannica's brother is just a strengthening of power, and a subtle hint of his, then still living mother, that he never reached her mind.
The burning of Rome and the subsequent persecution of Christians. It is worth noting here that the fire was in 64, that is, already in the tenth year of Nero's reign, by this time he had finally begun to "fly off the rails" due to the constant toadiness of his entourage, from the bottom to the day assuring him of the uniqueness in everything ... Otherwise it was impossible, otherwise death. The true Hellene, whom Nero considered himself to be, willingly believed them, and by that time had already believed sincerely. Yes, he himself mentioned the fire that he wants to see. So maybe this is a set-up, of the same Senate, who dreamed of the return of previously lost powers (by that time their role was no larger than our Federation Council, and even lower, they could only recognize and glorify the Emperor's successes) It hurts to somehow quickly plebs found out about his secret desires, with which he would hardly have begun to share with the commoners. And they demanded revenge, and Nero gave them a sacrifice ... bread and circuses. And he became loved again. In my opinion, even now politicians are quite good at translating arrows, so is it worth blaming a man of antiquity for this, who no longer only defended his power, more he already defended his life. And unfortunately for Christians, the Vladyka's choice fell on their heads. So after all, in those years, the Christian community was no more than an ordinary sect, with its own incomprehensible teaching, including for Nero himself. I see no reason to make a choice in their favor, sacrificing myself. They simply ended up in the wrong time and in the wrong place, and their mass execution, which struck the seasoned Romans, only gave an impetus to the spread of a hitherto unseen doctrine. Nobody said thanks to Nero.
The accusations of the extermination of all contenders for power do not stand up to scrutiny, because everyone did it, appointing the favorite in advance in advance. Tiberius especially succeeded in this, having eradicated the "seventh water on jelly", leaving only his favorite Caligula. But, we don't hear anything particularly bad about him. There was such an emperor, well, okay. It is now possible to make a reportage from the sauna, in which the main role is played by a person who resembles the Attorney General, or from another high position, and in the episodes - girls of facilitated behavior, and that's all, he is no longer in politics. Then this would not work, you will not surprise anyone with such. Therefore, murder was the only way not only to come to power, but also to preserve it. Let's not forget that during the time of Nero, many conspiracies were uncovered, the largest of which was the Piso conspiracy. A lot of people were killed then, including the ideological inspirers of the conspiracy of quite respected people - Seneca, Gaius Petronius, Lucan ... They were not ardent conspirators, they had a sweet life under Nero, but they would not refuse to change their lives for the better. Nero knew this, therefore he killed, not all at once, at intervals, like a true Hellene enjoying ... his genius.
Answering the question posed, we can say this: Nero was brought up by the customs of that time. The upbringing of the Stoic philosopher Seneca did not last long, but those were happy years for Rome. Indeed, he started very well, personally delving into all the intricacies of governing the country, especially in matters of taxation. And his intentions were the very best.
We need history so as not to repeat mistakes, but alas, the world throughout its time has repeatedly found itself a universal idol, whose actions led to sad consequences.
If the great thinker and philosopher Lucius Anneas Seneca knew what fate awaited him, it is unlikely that he would agree to be the mentor of the future emperor, and then in those days when he was a mentor, no one knew for certain that Nron would become the emperor of the Roman Empire. This business was helped by his mother Agrippina, the most depraved woman in Rome, who killed her husband, Emperor Claudius. Nero inherited the habits of his mother, the habits of the Julian-Claudian dynasty, where the heir of Caesar, Octavian Augustus himself, killed for the sake of power the only son of Caesar, "adored by him," Caesarion, born of Cleopatra of Egypt. and you will not blame Seneca for anything ...