Early Stoics - We Do Not Have Any Extant Writings of Zeno

Chrysippus is surely the most important ancient philosopher for whom we have no surviving writings. He systematized Stoic teachings that all Stoics would defend for centuries. For early skepticism, things are much as with early Stoics: We know tradition solely through fragments and testimonies. Many authors who lived under the Roman Empire also preserve evidence about the Hellenistic schools.