What do we know about Arrian of Nicomedia?

Although Arrian is quoted repeatedly by many historians, ancient and modern alike, we don’t know precisely when he was born or died. He lived during the reign of two great emperors, Trajan and Hadrian, when the Roman Empire experienced its most remarkable expansion.

He was a versatile man and prolific writer, but he was a historian most of all. How he found the time to pen down his many books besides pursuing a military career, holding public offices, and becoming a famous philosopher is commendable. 

Arrian, whose full name was Lucius Flavius Arrianus, was born in Nicomedia (modern Izmit, Turkey), a province of Bithynia ruled by Rome. Consequently, he was probably a Roman citizen. He grew up in an aristocratic family, was well-educated, and held the post of governor of Cappadocia from approximately 131 until 137 AD. Since the culture in Asia Minor was still very Greek, he grew up with this dual identity, making him a true Graeco-Roman. 

Arrian was the perfect person to write about Alexander the Great, having such a background. With his upbringing in Nicomedia, he realized that Alexander left behind so much Greek culture (he didn’t use the word Hellenistic!) He absorbed it all, even though he looked at it from a Roman perspective several centuries later. 

As a young man, c.108 AD, he moved to Nicopolis, Greece (earlier in Epirus), to stay with Epictetus. Epictetus considered philosophy a way of life, meaning that whatever happened was beyond our control, and we should accept events as they unfolded. His main philosophy was self-knowledge, similar to the Delphic maxim, know thyself. These wise words were visible in the pronaos of the Temple of Apollo in Delphi and were spread by Aeschylus, Socrates, and Plato. It is unknown whether Epictetus based his thoughts on this inscription, as no writings from his hand have survived. It was Arrian who wrote down Epictetus’ lectures in his Discourses of Epictetus and Enchiridion. 

The philosopher considerably influenced Arrian’s education and introduced him to important political people. The most notable figure probably was the later Emperor Hadrian – himself a pupil of Epictetus - whom he befriended in 126 AD. Hadrian appointed Arrian to the Roman Senate around 130 AD and promoted him to the governor of Cappadocia about a year later. During his governorate, he successfully stopped the invasion of the Alani in 135 AD. This was when Arrian documented his victory by writing his Ectaxis contra Alanos (Order of Battle against the Alans), which provides us with a unique insight into the Roman army in action that still bore “the stamp of Macedon.” Aware of the difference between the Macedonian and Roman phalanx, Arrian drew parallels between them. He underscored that the phalanx was not something of the past but still an active weapon in the contemporary military. His military career took him to many countries away from his native Bithynia, where he saw very different animals and plants from his familiar homeland. 

Arrian’s military career probably started earlier as he led an army to the Caspian Gates during Emperor Trajan's rule (98-117 AD). As governor of Cappadocia, Arrian commanded two Roman legions, which was when he wrote his Ars Tactica (The Tactical Arts). Experiencing the strategies and maneuvers firsthand, he described cavalry tactics and praised military innovations. In both Ectasis and Tactica, he mixed Greek and Roman military theories.

Arrian has a great interest in geography and a keen eye for details. Under Hadrian, he wrote the Periplus of the Euxine Sea (Sailing around the Black Sea) to inform the emperor about the region he considered exploring. Besides helpful information about ports, rivers, and cities, he included specific details about the viability and landscapes. In his Cynegeticus, which is an addition to Xenophon’s work, he stated, for instance, that Mysia (northwest Turkey), Dacia (mainly all of present Romania), Scythia, and Illyricum (the greater Balkans) had plains that were “adapted for riding.” 

Clearly, our historian started writing at a very young age. However, many of his works are lost or only survive fragmentarily, leaving us with titles alone. Besides the titles already mentioned above, he wrote:

- Biographies like Lives of Dion, Timoleon, and Tillorobus

- several volumes dedicated to his homeland, the Bithyniaca

- a history of the Parthians, the Parthica

- a history of the Alans, Historia Alanica

- an essay on maneuvers, On Infantry Exercises

- an essay about astronomy, On Nature, Composition, and Appearances of Comets

- And, most interestingly, a volume focusing on the events after the death of Alexander, The History of the Successors – sadly lost to humanity forever! Imagine the twists history could take if we had this book!

When or where exactly Arrian wrote his famous Anabasis or The History of the Wars and Conquests of Alexander the Great remains obscure. It is generally accepted as his most outstanding work, together with the Indica addendum about India. With these two books, Arrian is, to this day, our most precious and reliable source about Alexander. The historian could project his own military experiences and campaigns into his vision of Alexander. Arrian also had a profound fascination with Persia and Persian customs, which he lavishly shares in his Anabasis. 

Notably, he could rely on several sources, from first-rank witnesses to Alexander’s campaigns. These were generals and close Companions who had access to Alexander’s Royal Journal – men like Ptolemy, Nearchus, and Megasthenes. Another precious source was Eratosthenes, a librarian at the rich Library of Alexandria. Aristobulus also served under Alexander and later wrote a history of Alexander, including careful observations on geography, ethnography, and natural science. Aristobulus’ notes about which plants grew in specific regions of the lands Alexander conquered were vital because it gives us a glimpse of Alexander’s knowledge of plants and animals based on Aristotle’s lessons. 

It is still being determined what happened to Arrian at the end of his governorship in Cappadocia in 137 AD. Still enjoying the favors of Hadrian, he most probably became governor of Syria between 135 and 150 AD.

Towards the end of his life, he moved to Athens, where he became archon, probably in 145 or 146 AD. Other sources, however, state that Arrian retired to Nicomedia, where he was appointed priest to Demeter and Persephone. 

Arrian died some time during the reign of Marcus Aurelius, 121-180 AD, who was the last of the so-called good emperors. 

Witnessing how meticulous and objective Arrian proceeds in his Anabasis to describe Alexander’s campaigns, not only the sieges and the battlefields but also the geography and the nature and habits of the people, it is easy to realize how much information is lost in his other works.

Alexandria, the first Renaissance

The term Hellenism is often interchanged with Greek, especially in art. Classical Greek art almost unnoticeably merged with Hellenistic art, and we owe it all to Alexander. In the wake of his conquests, Greek culture and language spread all over the ancient world, from Greece to India. Thanks to the common use of the Greek language, trade developed as merchants were always looking for business opportunities. Talking to buyers and sellers in the same language was a considerable asset. 

After the wars among Alexander’s successors were settled, peace returned in one form or another. Traffic and exchanges between East and West soon blossomed to reach a level never achieved before. 

Greek knowledge and culture were mixed and blended with the learning of Egypt, Mesopotamia, Central Asia, and India. In this context, Alexandria became the new center of the ancient world. 

It was in Alexandria that the first Library was created. In today’s words, this could be compared to a university. Ptolemy I Soter initially founded a Museum inside the Temple of the Muses (hence the name Museum), where all art and sciences were brought together. 

It seems that the Library was, in fact, an extension of the temple built by Ptolemy II Philadelphus, his son. Like every other building in Alexandria, we only have a slight idea of what it looked like, as, to this day, very few remains have been unearthed. An outstanding effort to visualize the great Library was made by Kevin Kok, Senior Level Artist at Ubisoft Montreal, to recreate the complex as it would or could have been (see: The Library of Alexandria). In time, the terms Museum and Library were used interchangeably. 

The Library of Alexandria certainly met Alexander’s own desire to create a research center where knowledge from East and West would be collected to be shared by all. The very concept existed already in the Academy and the Lyceum of Athens, but at Alexander’s death in 323 BC, the ancient world had grown into another dimension. We must credit Ptolemy for understanding Alexander’s vision and executing his ambition. 

Eventually, great scientists flocked to Alexandria, exchanging and discussing their understanding and perception of the world. Much research was done at the Museum, which held an astronomical observatory and rooms for anatomical dissections, and where all sorts of experiments were carried out. The site also included botanical and zoological gardens. How modern is that! 

It is generally accepted that Dimitrios of Phaleron was responsible for the organization. With the budget made available by Ptolemy II, he collected all the books he could, including the works of Aristotle and Theophrastus. Ptolemy III continued this trend, and the Library could boast of having half a million parchment rolls. Among them were all the great Greek works from Homer onward! 

After the death of Dimitrios, Zenodotus of Ephesus took over, assisted by Callimachus of Cyrene. This Callimachus is credited with being the first to classify 120,000 works of prose and poetry, sorting them by author and subject. Eratosthenes of Cyrene was appointed around 235 BC as the new head of the Library. He concentrated on mathematics, astronomy, and geography. We’ll remember Eratosthenes’ contribution to calculating the planet Earth's size after Pythagoras had declared that the Earth was a sphere (see: Alexander missed Eratosthenes by less than a century). 

Great scientists widely contributed to the Library. Euclid wrote his Elements of Geometry, which is still used today, and also a book on astronomy and one on perspective, the Optica. Archimedes, a native of Syracuse, probably studied in Alexandria. He is best known for his theory of calculating the volume, which he discovered while bathing. He was so excited about his discovery that he ran out of his house, stark naked, shouting, “Eureka!” - I found it! (see: Archimedes, the most illustrious citizen of Syracuse). The greatest astronomer of antiquity was Hipparchus of Nicaea, who made great use of the Library of Alexandria.  Besides being a geographer and a mathematician, he was also the inventor of trigonometry, and most famous for discovering the precession of the equinoxes in the late 2^nd century BC. 

Lesser known but equally important is Ctesibius of Alexandria, the inventor of toys and devices using air under pressure, i.e., pneumatics. He created automatons such as a water clock, a fire engine, and even a singing statue. He also invented the first keyboard-wind instrument, the hydraulis, a recreation of which is exhibited in the Museum of Dion, Greece (see: Close encounter with an ancient Water-Organ). 

By 62 AD, Hero of Alexandria even invented the first steam engine! Imagine our world if this invention had not been lost. 

The list of scientists, astronomers, mathematicians, physicians, and inventors seems endless. All their knowledge was born in Alexandria, from where it spread over the entire ancient world for more than three hundred years! The famous Lighthouse of Alexandria, the Pharos, was one of the Seven Wonders of the World, shining its light over a great distance thanks to an intricate system of mirrors. How it actually worked remains obscure. It was probably damaged by the catastrophic earthquake that hit the entire coast of North Africa in 365 AD. Repairs never resuscitated this unique structure. 

Alexandria was also the center where Medical Science was born under Herophilus. He was the first scientist to systematically perform dissections of dead people, often in public, to explain his actions to those interested in these matters. His books are lost but were frequently quoted in the 2nd century AD by the physician Claudius Galenus, better known as Galen of Pergamon (see: Hello? Dr. Galen?) 

Other Libraries were known from antiquity (see: Libraries in antiquity, a short overview), but none surpassed the one in Alexandria. 

After centuries of glory, this great Library succumbed to earthquakes and repeated fires. The lack of funds to sponsor and maintain the premises was another reason for its degradation. Eventually, the knowledge was transferred to Antioch, and with the Arab conquest to Baghdad. We owe very much to Caliph Al-Mansur (754-775 AD), who had a vivid interest in Greek science. He ordered the Greek documents to be translated into Arabic. Over the centuries, these translations traveled back west to become available in Latin. In fact, Al-Mansur saved ancient Greek literature and science for us to enjoy today. This entire process is developed in detail by John Freely in his book Aladdin’s Lamp. How Greek science came to Europe through the Islamic World.

Alexander missed Eratosthenes by less than a century

Eratosthenes was born in Cyrene in c.275 BC, less than fifty years after the death of Alexander the Great. I can’t help wondering about the impact this mathematician, astronomer, and geographer would have had on Alexander and his campaign had both men known each other!

When Eratosthenes was about forty years old, Ptolemy III appointed him as chief librarian at the Library of Alexandria – a position he occupied until he died in c.195 BC. The Library was attached to the Museum, and together they were meant to be a university and research center. One may wonder whether the initial idea came from Alexander himself or was developed by Ptolemy I Soter. 

On the other hand, Eratosthenes was the first to write a chronology of Greek history and literature. Some people do live an amazingly well-filled life! 

The reason for bringing Alexander into the picture is double. Firstly, he was the founder of his major city of Alexandria, in 331 BC. His architect, Dinocrates of Rhodes, had roughly been planned, who complied with Alexander’s wish to create a megapolis. That is precisely what happened as the two main streets were designed to be 30 meters wide and all the other streets 15 meters. They were oriented in such a way as to profit from the sea breeze, while at the same time, they would provide shelter from the wind.  

The city walls were impressive also and ran over a distance of 15 kilometers. A mole had to be constructed to link the island of Pharos to the mainland. As a result, Alexandria would have two large harbors protected from the northerly winds. From experience in Libya, I can confirm that the strength of those winds cannot be underestimated! 

The second reason for mentioning Alexander is because of the great merit of Eratosthenes to be the first to draw a map of the world based on the imaginary lines of longitude and latitude, which enabled him to calculate the circumference of the earth.  

Pythagoras was the first to declare that the earth was a sphere, but he could not calculate its size. This is what Eratosthenes did. At noon on the summer solstice, he recorded simultaneous measurements at  Alexandria and at Syeme (close to Aswan) 5,000 stadia further south. The sun stood straight overhead in Syeme but not in Alexandria. Using a stick to measure the shadow, Eratosthenes found none in Syeme, whereas, in Alexandria, it cast a shadow with 7 degrees. Both cities lie near the same longitude line encircling the earth, 360 degrees. At this point, Eratosthenes calculated that 7 degrees are about 1/50 of 360 degrees. In other words, this means that the distance between the two cities must be 1/50 of the entire meridian. Hence, he multiplied the 5,000 stadia by 50, and he obtained an estimate of the earth’s circumference of 250,000 stadia. To simplify calculations, he rounded this figure up to 252,000, which is evenly divisible by 360. Although scholars cannot agree on the length of a stadium, their best estimate is 157 meters. As a result, Eratosthenes’ calculation of the earth’s circumference was 39,250 kilometers against 40,000 kilometers today.

 

That is an astonishing result given the lack of instruments and means Eratosthenes had at his disposal. 

Now imagine that less than a century earlier, all Alexander knew was that the earth was flat and surrounded by the Outer Ocean. How would he have looked at our planet, and how would this knowledge influence his campaigning? Had he known, his plans could have been designed in quite a different way!