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Zeno was succeeded by a lineage of influential thinkers, notably Cleanthes and Chrysippus. Chrysippus is considered the greatest of the Stoics, especially for developing logic and presenting innovations that shaped the school's doctrines. His prolific output—over 700 works—has mostly not survived but is known through references and quotations, underscoring his profound influence on logic and philosophy.
The Broader Hellenistic Philosophical Context
Stoicism was one among several competing schools, including Skeptics, Epicureans, Cynics, and Peripatetics. These schools often engaged in debate, especially with Skeptics, who doubted humans' capacity for certainty.