Seneca offers a revolutionary definition of wealth that shifts focus from external accumulation to internal satisfaction. This insight reveals two paths to feeling rich: acquire everything we want (impossible and exhausting) or reduce our wants to align with what we already have (achievable and peaceful). The wealthy person, in Seneca's view, is not necessarily someone with vast possessions but someone who feels satisfied with their current circumstances. This doesn't advocate for poverty or lack of ambition, but suggests that our sense of abundance should come from gratitude and contentment rather than constant acquisition. It's a definition of wealth that places control firmly in our own hands.