SVF Volume I

Zeno of Citium

Ζήνων ὁ Κιτιεύς · c. 334–262 BCE

Who was Zeno of Citium?

Zeno (c. 334–262 BCE) came from Citium on Cyprus to Athens, studied with the Cynic Crates and in other Socratic schools, and around 300 BCE began teaching in the Stoa Poikile — the Painted Porch — from which Stoicism takes its name. He divided philosophy into logic, physics and ethics, and taught that virtue, lived in agreement with reason, is the substance of a good life.

Why most of his writings have been lost

Ancient catalogues credit Zeno with many works — including the famous Republic — yet none survives as a complete book. Papyrus rolls perished, libraries burned, and later antiquity copied the Stoics it read most: Chrysippus's systematic treatises and, later, Roman Stoics such as Seneca, Epictetus and Marcus Aurelius. Zeno's own words reach us only where later authors chose to quote, summarise or argue with him.

Fragment, testimonium — and why the difference matters

A fragment preserves (or claims to preserve) the philosopher's own wording, usually as a quotation inside a later work. A testimonium is a later author's report about what the philosopher taught, in the reporter's own words. A quotation gives us wording; a testimonium gives us doctrine as someone else understood it. The StoicOs edition labels every entry accordingly and never presents a report as if it were Zeno's own voice.

What SVF numbering means — and reading later sources critically

“SVF I.179” refers to item 179 of von Arnim's first volume — a modern catalogue number, not a chapter of Zeno. The preserving authors write centuries after Zeno, with their own aims: doxographers compress, critics distort, admirers harmonise. Later Stoic doctrine may illuminate a passage but must not automatically be projected back onto Zeno. Every StoicOs entry therefore weighs who reports, from what distance, and with what interest.

Vita · SVF I.1–46

The Life of Zeno — the ancient testimonia as one continuous account

Material Evidence

Authentic objects and archaeological sites connected to Zeno and his school. Each image carries its provenance; ancient evidence and modern reconstructions are always distinguished.

Marble herm bust of a bearded elderly man with furrowed features, the ancient portrait type identified as Zeno of Citium, Naples — ANCIENT PORTRAIT TYPE · IDENTIFIED AS ZENO
Herm portrait of Zeno of Citium
Roman marble copy after a Hellenistic portrait type of the early 3rd century BCE — not a portrait made in Zeno's own lifetime. The lean, furrowed features became the standard image of the Stoa's founder in antiquity.
Dating
Roman copy; portrait type created early 3rd century BCE
Findspot
Findspot unrecorded; formerly Farnese Collection, Rome
Collection
Museo Archeologico Nazionale, Naples (Farnese Collection)
Inventory no.
inv. 6128
Relation to Zeno
The portrait type identified in scholarship as Zeno of Citium, founder of the Stoic school.
Identification
High — the identification of the type rests on inscribed herm copies and is generally accepted in scholarship.
Source
Museo Archeologico Nazionale di Napoli; photograph via Wikimedia Commons
Image rights
Photo: Jeremy Weate, CC BY 2.0 (Wikimedia Commons)

Excavated stone foundations of the west end of the Stoa Poikile in the Athenian Agora — ARCHAEOLOGICAL SITE
The Stoa Poikile (Painted Stoa), west end
Excavated remains — not a modern reconstruction — of the colonnade on the north side of the Athenian Agora in which Zeno taught. The Stoic school takes its name from this building.
Dating
Building: c. 475–450 BCE; photograph: 1991
Findspot
Athens, Agora excavations north of Adrianou Street
Collection
In situ, Athenian Agora, Athens
Relation to Zeno
Zeno lectured in this stoa (Diogenes Laërtius 7.5); his followers were therefore called Stoics.
Identification
High — the identification of these remains as the Stoa Poikile is established by the Agora excavations.
Source
American School of Classical Studies at Athens, Agora Excavations; photograph via Wikimedia Commons
Image rights
Photo: Mark Landon, 1991, CC BY 4.0 (Wikimedia Commons)

Excavated stone foundations at the archaeological site of ancient Kition in Larnaca, Cyprus — ARCHAEOLOGICAL SITE
Excavations of ancient Kition (Larnaca, Cyprus)
The archaeological area of Kition, the Cypriot harbour city where Zeno was born around 334 BCE — shown here as geographical and biographical context. No excavated structure or object can be connected to Zeno personally.
Dating
City occupied from the 13th century BCE; photograph: modern
Findspot
Kition archaeological site, Larnaca, Cyprus
Collection
In situ, Department of Antiquities, Cyprus
Relation to Zeno
Zeno's birthplace; from Kition he came to Athens around 312 BCE (Diogenes Laërtius 7.1–5).
Identification
High for the site itself — the identification as ancient Kition is archaeologically secure. No direct link to Zeno personally is claimed.
Source
Department of Antiquities, Cyprus; photograph via Wikimedia Commons
Image rights
Photo: Josef Moser, CC BY-SA 4.0 (Wikimedia Commons)

Source entries

76 / 76 sources

About this edition

StoicOs Ancient Library is a developing multilingual digital study edition of surviving early Stoic material. The Stoicorum Veterum Fragmenta assembled by Hans von Arnim provides the traditional reference framework. StoicOs distinguishes carefully between fragments, testimonia, later reports and interpretation. StoicOs translations are prepared from the surviving ancient-language sources where available.