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Library Zeno of Citium

Written work

On Substance

Περὶ οὐσίας

Busto de Zenón de Citio (colección Farnese, Nápoles)
byZeno of Citium

A lost physics treatise cited by Diogenes Laertius (VII 134) as the source of the doctrine of the two principles of the universe: a passive one, unqualified matter, and an active one, reason or god, which, eternal, pervades it and shapes each thing. It is the basis of Stoic physics.

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Authorship note

A lost work, not included in the list at VII 4; known from Diogenes Laertius' citation (VII 134).

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Sources

  • Diógenes Laercio. Vidas y opiniones de los filósofos ilustres, libro VII, 1–160 (Zenón y la doctrina estoica), s. III d. C. Trad. inglesa de R. D. Hicks, Loeb Classical Library 185, 1925 (Wikisource en inglés); texto griego en Wikisource griega; trad. de C. D. Yonge, Bohn, 1853 (Project Gutenberg n.º 57342).

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