Sources

Sources about the Stoics from all (ancient) time periods

Sources during the Hellenistic period (323 - 133 BCE)Cleanthes, of Assos, Hymn to Zeus

Sources outside the Hellenistic period (after 133 BCE)Diogenes Laertius, Lives of Eminent Philosophers (7.1)http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0258%3Abook%3D7%3Achapter%3D1Cicero, De Natura Deorum + Academia https://archive.org/stream/denaturadeorumac00ciceuoft/denaturadeorumac00ciceuoft_djvu.txt Marcus Aurelius, Meditations http://classics.mit.edu/Antoninus/meditations.html Epictetus, The Art of Living https://books.google.co.uk/books?id=Ri_sAgAAQBAJ&printsec=frontcover&dq=epictetus+the+art+of+living&... Plutarch, De communibus notitiis adversus Stoicos (On common notions against the Stoics) http://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:2008.01.0393 Pluarch, On Stoic Contradictions https://ebooks.adelaide.edu.au/p/plutarch/essays/chapter5.html Sextus Empiricus, Against the Professors Seneca, Letters From a Stoic Athenaeus, The Deipnosophists