Stoic Philosophy Overview

Aug 18, 2025

Overview

This lecture provides an overview of Stoic philosophy, its historical development, key figures, core teachings, and ongoing influence from antiquity to modern times.

Origins and Core Teachings of Stoicism

  • Stoicism emerged around 300 BC in Athens, founded by Zeno of Cition.
  • The school is named after the "stoa poikile" (painted portico) where followers met.
  • Stoicism emphasizes calm, emotional self-control, acceptance of fate, and striving for virtue and knowledge.
  • Stoics believe the cosmos is a rational, ordered whole governed by a universal principle.
  • The goal of Stoicism is to live in harmony with nature and recognize one's place in the universe.

Key Representatives and Historical Periods

  • Early Stoics: Zeno of Cition, Kleanthes of Assos, and Chrysippus of Soloi.
  • Zeno lost his wealth and taught virtue, asceticism, and the idea of a cosmic republic in "Politeia."
  • Kleanthes, a former boxer, led the school after Zeno and developed Stoic theology.
  • Chrysippus systematized Stoicism, wrote extensively on logic, and described the Stoic sage as free from emotions.
  • Middle Stoics: Panaitios of Rhodes and Poseidonios of Apamea brought Stoicism to Rome and integrated elements from Plato and Aristotle.
  • Roman Stoicism: Major figures include Seneca, Epictetus, and Marcus Aurelius; focus shifted to practical ethics and achieving inner peace (ataraxia).

Reception and Influence Through History

  • Stoicism influenced early Christian thought, neo-Stoicism in the Renaissance, and Enlightenment philosophers like Kant.
  • Major works and thinkers influenced by Stoicism include Erasmus of Rotterdam, John Calvin, Montaigne, Descartes, Spinoza, and Kant.
  • In the 20th and 21st centuries, Stoic ideas influenced existentialism, cognitive behavioral therapy, and self-help literature.
  • Modern Stoicism is popular in management, psychotherapy, and online communities, emphasizing practical life strategies.

Key Terms & Definitions

  • Stoa poikile — the painted portico in Athens where early Stoics met.
  • Ataraxia — peace of mind or inner tranquility.
  • Cosmopolitanism — the idea of world citizenship and unity with the cosmos.
  • Stoic Sage — an ideal person living in harmony with natural laws and free from passions.

Action Items / Next Steps

  • Test your knowledge with the Quizlet set “Stoa: Historical Overview.”
  • Prepare for the next lecture on Stoic logic (“the eggshell” of Stoic philosophy).