With a strong sense of social duty, a number of them took stands against powerful people and were executed (Julius Canus)  or ordered to suicide (Seneca and Thrasea Paetus
Thus, for example, Stoics would have been more on the defensive after the trial of Thrasea Paetus for treason in 66 and Nero's action against other members of his family and coterie (Tac.
When a Thrasea Paetus faced the wrath of an emperor it was for his principled stand in defence of moral issues, (62) and not for his theological, or rather ontological beliefs.
Publius Clodius Thrasea Paetus
: filosofo estoico e senador romano, em 59 reprovou as justificativas de Nero para o assassinato da propria mae.
As such, Calgacus and his oration ought not to be read only in the context of Tacitus' views on imperialism and the Pax Romana, but in the context of such characters as Helvidius Priscus and Thrasea Paetus, that is, in light of those who aspire to and actually live ancient, republican values.
For Thrasea Paetus and Helvidius Priscus, lack of compromise meant destruction, and Tacitus, while he may have had some sympathy for them, followed the course advised by the notorious delator, Eprius Marcellus: se meminisse temporum quibus natus sit, quam civitatis formarn patres avique instituerint; ulteriora mirari, praesetia sequi; bonos imperatores voto expetere, qualiscumque tolerare.
(35.) For a discussion of virtus in Tacitus see Martin 41; perhaps the best example of virtus as a "republican" characteristic is found in Tacitus, Ann 16.21.1: trucidatis tot insignibus viris ad postremum Nero virtutem ipsam excindere concupivit interfecto Thrasea Paeto et Barea Sorano ("After so many famous men had been slaughtered Nero at last desired to exterminate virtue itself, with Thrasea Paetus and Barea Soranus having been killed").
It is very likely that this is why so much space is given to the expertise at alea of Calpurnius Piso by the author of his verse eulogy, if he is indeed to be identified with the leader of an important but doomed conspiracy against Nero.(59) His inaction is to be compared with the fame of what principled opponents of that regime like Thrasea Paetus
deliberately did not do.
Valerius' portrayal of Aeson and Alcimede does in fact recall the lives and deaths of Thrasea Paetus and his wife, Arria (Tac.
With this statement, then, Valerius reinforces the symbolic relationship between Aeson and Thrasea Paetus. The man who strives to dispel mortal anxieties, who observes loyalty, to whom fear and desire are unknown may clearly be identified as an adherent of the Stoic philosophy.