Most people treat development as a private project — something you consolidate internally before sharing with the world.
Seneca disagrees. In Letter 6, he acknowledges his own progress to Lucilius not from a position of completion but from inside an ongoing process. The act of sharing is not the reward for progress — it is one of its primary mechanisms.
Letter 34 extends this: Lucilius’s development is a direct reflection of Seneca’s investment. Teacher and student are not on separate tracks. They are a single developmental system where each person’s growth accelerates the other’s.