This paper aims to analyse a dense passage of De ira by Seneca (III, 2) that, considering its structural and thematic relevance in the architecture of the tractate, gives rise to interesting and valuable considerations to understand more deeply the nature of the work. First, the extract under examination is crucial since enables to identify the dossographic sources that the author drew on to develop the therapeutic strategy adopted for the treatment of anger in the third book of the work. Furthermore, an overall interpretation of the essay, based on a passage so rich in literary and philosophical implications, will be provided. Eventually, we will deal with the therapeutic approach selected by the philosopher and its analogies with the anci...