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person330 BCE-230 BCE

Cleanthes

Disciplines:
theology
ethics
cosmology

Summary

Greek philosopher who succeeded Zeno as head of the Stoic school, known for emphasizing the theological and cosmological dimensions of Stoicism.

Core Contribution

Deepened Stoic theology: identified the active rational principle (logos) with Zeus and the sun; wrote the Hymn to Zeus, arguing cosmic virtue and divine providence are identical. Defended the unity and divinity of the world-soul.

Key Spikes & Highlights

  • Worked as a water-carrier by night to fund his philosophical studies by day — cited by later Stoics as an example of endurance.
  • Opposed Aristarchus's heliocentric model on theological grounds, arguing the sun's motion served divine purposes.

Notable Works & Achievements

Hymn to Zeus

On Time

On Impulse

Historical Influences

Zeno of Citium

Intellectual Lineage

Stoicism Cynicism

Contemporaries & Peers

Zeno of Citium Chrysippus Epicurus

Minds Influenced

Chrysippus

Intellectual Posterity

Stoic TheologyPantheism

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Cleanthes

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