When writing about any of the great ancient Stoic philosophers—like Marcus Aurelius, Seneca, Epictetus, Cato, Zeno, Cleanthes, Hecato, or Musonius Rufus—it’s important to remember that these are only the Stoics whose names survive to us. It’s a great miracle that Marcus Aurelius’s private journal, Seneca’s letters, Arrian’s notes of Epictetus’s lectures survived thousands of years. […]