Cassius Longinus
Who was Cassius Longinus?
Syrian/Egyptian Neoplatonist philosopher (c.213–273)
Biographical data adapted from Wikipedia’s article on Cassius Longinus (CC BY-SA 4.0).
Biography
Cassius Longinus (c. 213–273 AD) was a Greek rhetorician, philosophical critic, and statesman whose intellectual career spanned the challenging middle decades of the third century. Born in Homs, in what was then the Roman province of Syria, Longinus received his education in Alexandria. There, he studied under two major philosophical teachers: Ammonius Saccas and Origen the Pagan. This education placed him among the intellectual movements leading to Neoplatonism, although Longinus chose to remain a traditional Platonist instead of following the new ideas developed by Plotinus.
After finishing his studies, Longinus moved to Athens, where he taught philosophy and rhetoric for about thirty years. His classroom attracted dedicated students from all over the Greek-speaking world, including Porphyry, who later became a leading Neoplatonist philosopher and the main biographer of Plotinus. During his time in Athens, Longinus earned an extraordinary reputation as a literary critic, whose judgments on Greek prose and poetry were highly respected by both his contemporaries and later generations.
Later in life, Longinus traveled east and eventually worked for Zenobia, queen of Palmyra. He became her main advisor and is credited with planning her decision to challenge Roman authority and declare Palmyrene independence. This was a bold political move, and Longinus was a strong advocate for it, writing letters and proclamations that gave the queen's ambitions philosophical and rhetorical weight.
However, the plan failed. The Roman emperor Aurelian quickly moved against Palmyra, defeating Zenobia's forces and taking the city. Longinus was executed in Palmyra in 273 AD, likely due to his role in encouraging the revolt. Ancient sources note that he faced his death with calm and philosophical composure, reinforcing his reputation as a man who lived by his teachings. Zenobia, on the other hand, was spared and taken to Rome.
Longinus wrote about rhetoric, grammar, and literary criticism, including a lexicographical work known as Words in Alphabetical Order. There has been debate over the authorship of several ancient texts, particularly the treatise On the Sublime, long linked to his name, though modern scholarship has largely decided it was written before him. Despite these questions, Longinus made a lasting impact on ancient criticism through his extensive knowledge and consistent critical standards.
Before Fame
Cassius Longinus was born around 213 AD in Homs, a city in Roman Syria that was an important regional center. The third century was a time of significant instability throughout the Roman Empire, yet its eastern provinces were still lively hubs of intellectual and commercial activity. This atmosphere influenced Longinus's early exposure to Greek learning and led him to Alexandria, which remained the top center of philosophical education in the Mediterranean.
In Alexandria, Longinus studied under Ammonius Saccas, who also taught Plotinus, and under Origen the Pagan, another well-respected philosopher of the time. This education gave Longinus not only a deep understanding of Platonic philosophy but also a strong foundation in rhetoric and literary analysis. By the time he settled in Athens as a teacher, he had gained enough intellectual reputation to attract serious students and to engage on equal terms with the leading philosophical figures of his time.
Key Achievements
- Taught philosophy and rhetoric in Athens for approximately thirty years, training notable students including Porphyry
- Compiled the lexicographical work Words in Alphabetical Order, an early example of alphabetically organized scholarly reference
- Served as chief counselor to Zenobia of Palmyra and was the principal intellectual force behind her challenge to Roman authority
- Established a lasting reputation as one of antiquity's most authoritative literary critics
- Studied under both Ammonius Saccas and Origen the Pagan in Alexandria, placing him at the center of third-century philosophical development
Did You Know?
- 01.Porphyry, who became one of the most influential Neoplatonist philosophers of antiquity, was among the students trained directly by Longinus in Athens.
- 02.Longinus was one of the few major intellectuals of his era who explicitly rejected the Neoplatonism of Plotinus, preferring to maintain what he considered the purer traditions of earlier Platonic thought.
- 03.For several centuries, the celebrated ancient treatise On the Sublime was attributed to Longinus, a misattribution that gave him a fame in early modern Europe that modern scholarship has substantially revised.
- 04.Ancient accounts describe Longinus accepting his execution by Aurelian with calm and philosophical dignity, consoling those around him rather than showing fear.
- 05.His lexicographical work, Words in Alphabetical Order, represents one of the early examples of alphabetically organized reference scholarship in the ancient world.