# Cleanthes

> Greek Stoic philosopher and boxer (3rd-century BC)

**Wikidata**: [Q310149](https://www.wikidata.org/wiki/Q310149)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Cleanthes)  
**Source**: https://4ort.xyz/entity/cleanthes

## Summary
Cleanthes was a Greek Stoic philosopher and boxer who lived during the 3rd century BC. Born in the ancient city of Assos, he is best known for succeeding Zeno of Citium as the head of the Stoic school and for his extensive writings on Stoic principles. His work laid the groundwork for later Stoic thinkers, including Chrysippus of Soli, who studied under his mentorship.

## Biography
- Born: c. 331 BC (approximate date: -0331-00-00T00:00:00Z)
- Nationality: Greek (Citizenship: Q744631)
- Education: Trained in philosophy; specific degrees or institutions not listed in source material
- Known for: Leading the Stoic school of philosophy and authoring significant Stoic texts
- Employer(s): Head of the Stoic school (successor to Zeno of Citium)
- Field(s): Philosophy, Stoicism

## Contributions
Cleanthes made significant contributions to the development and preservation of Stoic philosophy. He succeeded Zeno of Citium as the head of the Stoic school, ensuring the continuity of its teachings. He wrote extensively on Stoic principles, though none of his original works survive in their entirety; his ideas were preserved through later philosophers. His mentorship of Chrysippus of Soli was instrumental in shaping the next generation of Stoic thought. Cleanthes is also noted for his unique background as a boxer before becoming a philosopher, which influenced his approach to philosophical discipline.

## FAQs
**Who was Cleanthes and what was his background?**
Cleanthes was a Greek Stoic philosopher and former boxer from the ancient city of Assos in modern-day Turkey. He lived during the 3rd century BC and became a central figure in the Stoic school of philosophy.

**What role did Cleanthes play in the Stoic school?**
He succeeded Zeno of Citium as the head of the Stoic school, leading the movement and expanding its intellectual legacy. His leadership ensured the school's survival and growth during a critical period.

**Did Cleanthes write any surviving works?**
While Cleanthes wrote extensively on Stoic principles, none of his original works have survived to the present day. His teachings were preserved and transmitted by later Stoic philosophers, including Chrysippus.

**How did Cleanthes influence Chrysippus of Soli?**
Chrysippus of Soli trained under Cleanthes, who served as his mentor. This relationship was crucial in shaping Chrysippus's philosophical development and his later contributions to Stoicism.

**Where was Cleanthes from?**
Cleanthes was born in Assos, an ancient city in the region of Troas, which is located in modern-day Turkey. He was a Greek citizen and philosopher.

## Why They Matter
Cleanthes played a pivotal role in the history of Western philosophy by maintaining the integrity and direction of the Stoic school during its formative years. His leadership bridged the gap between the founder, Zeno of Citium, and the systematizer, Chrysippus of Soli, ensuring that Stoic principles were not lost but rather refined and expanded. Without Cleanthes's stewardship, the Stoic tradition might have fragmented or faded, altering the trajectory of ethical and logical discourse in antiquity and beyond. His unique combination of athletic discipline and philosophical inquiry also provided a distinctive model for the Stoic ideal of living in accordance with nature.

## Notable For
- Serving as the second head of the Stoic school of philosophy after Zeno of Citium
- Being a former boxer who transitioned into a renowned philosophical career
- Mentoring Chrysippus of Soli, who would become the most influential Stoic philosopher
- Authoring numerous works on Stoic ethics and logic (none survive intact)
- Originating from Assos, an ancient city in Troas (modern-day Turkey)
- Holding Greek citizenship during the 3rd century BC

## Body

### Early Life and Background
Cleanthes was born around 331 BC in Assos, an ancient city located in the region of Troas, which is now part of modern-day Turkey. He was a Greek citizen and is historically noted for his dual identity as both a boxer and a philosopher. Before dedicating his life to philosophy, he worked as a boxer, a fact that often surprises modern readers but highlights the Stoic emphasis on physical and mental discipline. His transition from athletics to philosophy underscores the Stoic belief in the cultivation of virtue across all aspects of life.

### Leadership in the Stoic School
Following the death of Zeno of Citium, Cleanthes assumed the role of head of the Stoic school. This position placed him at the center of the philosophical community in Athens, where he guided the school's direction and teachings. Under his leadership, the Stoic school continued to grow in influence, attracting students and scholars who were eager to learn about Stoic ethics, logic, and physics. Cleanthes's tenure as head of the school was marked by his commitment to preserving the original teachings of Zeno while also adapting them to new intellectual challenges.

### Philosophical Works and Legacy
Cleanthes wrote extensively on various aspects of Stoic philosophy, including ethics, logic, and theology. Although none of his original works have survived in their entirety, fragments of his writings are preserved in the works of later authors. These fragments reveal his deep engagement with Stoic principles and his efforts to systematize the school's teachings. His influence is particularly evident in the work of Chrysippus of Soli, who studied under Cleanthes and later became the most prominent Stoic philosopher. Chrysippus's success can be partly attributed to the foundational training he received from Cleanthes.

### Mentorship of Chrysippus
One of Cleanthes's most significant contributions was his mentorship of Chrysippus of Soli. Chrysippus, who would go on to become the third head of the Stoic school, trained under Cleanthes and was deeply influenced by his teachings. This mentorship was crucial in shaping Chrysippus's philosophical development and his later contributions to Stoicism. Cleanthes's guidance helped Chrysippus refine and expand upon the original Stoic doctrines, leading to a more systematic and comprehensive approach to Stoic philosophy.

### Historical Context and Identifiers
Cleanthes lived during the 3rd century BC, a period of significant philosophical activity in the Hellenistic world. His life and work are documented in various historical sources, including the works of Diogenes Laertius and other ancient biographers. Modern databases and academic sources provide numerous identifiers for Cleanthes, including Wikidata ID Q448840, VIAF ID 31867941, and GND ID 118834606. These identifiers help scholars and researchers locate and reference his works and contributions in contemporary academic discourse.

### Physical and Intellectual Discipline
Cleanthes's background as a boxer is a notable aspect of his life that reflects the Stoic emphasis on physical and mental discipline. His experience in athletics likely influenced his philosophical approach, emphasizing the importance of strength, endurance, and self-control. This combination of physical and intellectual rigor made Cleanthes a unique figure in the history of philosophy, embodying the Stoic ideal of a well-rounded and virtuous life.

### Preservation of Stoic Teachings
Despite the loss of his original works, Cleanthes's teachings were preserved through the efforts of later Stoic philosophers. Chrysippus, in particular, played a crucial role in transmitting Cleanthes's ideas to future generations. The survival of these teachings is a testament to the enduring impact of Cleanthes's work and the importance of his contributions to the Stoic tradition. His legacy continues to influence modern discussions on ethics, logic, and the pursuit of virtue.

### Geographic and Cultural Context
Cleanthes's origin in Assos, an ancient city in Troas, places him within the broader context of Hellenistic culture and philosophy. Assos was a significant center of learning and intellectual activity during this period, and Cleanthes's upbringing there likely influenced his philosophical development. His Greek citizenship and cultural background further contextualize his role as a key figure in the Stoic school, which was deeply rooted in Greek intellectual traditions.

### Modern Recognition and Documentation
Cleanthes is recognized in modern academic and digital databases through a variety of identifiers and references. These include his Wikidata entry, various library catalog numbers, and references in scholarly works. The extensive documentation of his life and work ensures that his contributions to philosophy remain accessible to contemporary researchers and students. His legacy is preserved not only through historical texts but also through modern digital resources that facilitate the study of ancient philosophy.

## References

1. Q45197041
2. Q45276934
3. Library of the World's Best Literature
4. International Standard Name Identifier
5. CiNii Research
6. Virtual International Authority File
7. [Source](https://opac.sbn.it/risultati-ricerca-avanzata?item:5032:Nomi::@frase@=RMLV038932)
8. Perseus Catalog
9. Great Norwegian Encyclopedia
10. Freebase Data Dumps. 2013
11. [Source](https://www.bartleby.com/library/bios/index4.html)
12. CERL Thesaurus
13. Treccani's Enciclopedia on line
14. Enciclopedia Treccani
15. LIBRIS. 2013
16. Treccani Philosophy