Though writing centuries later, James Allen echoed Stoic truths. His book *As a Man Thinketh* resonated with Marcus and Epictetus' ideas. He believed the mind is a garden — and self-mastery begins with weeding out fear, anger, and distraction. Calmness isn't passivity. It's clarity under fire. That's what made Stoics so unshakeable — their stillness was their strength.