Who was Seneca the Younger's correspondence with in "Epistulae Morales"?

Seneca the Younger wrote "Epistulae Morales" as a series of letters addressed to Lucilius Junior, who was a close friend and perhaps an admirer of Seneca’s philosophical ideas. In these letters, Seneca discusses various aspects of Stoic philosophy, ethics, and moral questions, aiming to advise Lucilius on how to live a virtuous life.

The letters serve a dual purpose: they are both personal correspondence and philosophical discourse. By addressing Lucilius directly, Seneca personalizes the lessons and provides a mentor-like guidance, making the content more relatable and applicable. This correspondence is significant not only for its philosophical insights but also for its rich reflection of the personal relationship between the two men.

Understanding that the recipient of Seneca's letters is Lucilius Junior helps situate the philosophical dialogues within a historical context—reinforcing the importance of mentorship and the exchange of ideas in the cultivation of personal virtue, which is a core tenet of Stoicism. The other names listed do not correspond to individuals who had this type of direct correspondence in Seneca’s writings.