Letter LXXVIII · On the Healing Power of the Mind
Seneca
In Seneca's view, adversity is not a mere obstacle but a crucible for mental fortitude. In his time, Stoicism countered the popular belief that happiness depended on external conditions. Seneca's line suggests that, like an athlete strengthens muscles through exertion, the mind grows resilient through challenges. The broader Stoic philosophy sees life's difficulties as opportunities to cultivate inner strength and wisdom.