From a historical perspective, the aim of this paper is to analyze the educational function of some harangues in the Roman historiography of the end of the Republic and the beginning of the Principate Era. Specifically, we study the exhortation of Catilina to the conspirators in Sallust's Bellum Catilinae, and the speeches of the consuls Valerio and Manlio in Ab Urbe Condita of Livy. From the conception of citizen education of the Classical World and from the moralizing notion of the classical historiography, the hypothesis proposes that the harangues are useful training resources, particularly for their ability to convey essential ideas that support and define the political community and its members.