The most quoted line from Seneca's wisdom omits the insight that transforms it from selfish ambition into something more reciprocal and humane. “Associate with those who will make a better man of you. Welcome those whom you yourself can improve. The process is mutual; for men learn while they teach.” That is Seneca writing to Lucilius, in Richard Mott Gummere’s translation, in the seventh of... [5052 chars]