Some figures from history feel distant. Hypatia of Alexandria feels close. More than sixteen centuries after her death, people still name schools, journals and even a lunar crater after her. Here’s who she was, what she actually did, and what makes her story still matter.
Who She Was
Hypatia lived in Alexandria, Egypt, then part of the Eastern Roman Empire. Her birth year is uncertain: scholars place it somewhere between about 350 and 370 AD. Her father, Theon of Alexandria, was a respected mathematician and astronomer, and he became her first teacher.
She went on to surpass him. The church historian Socrates Scholasticus, writing within a generation of her death, said she “made such attainments in literature and science, as to far surpass all the philosophers of her own time.” Students traveled from far away to hear her lecture.
What She Worked On
An honest caveat first: none of Hypatia’s writings survive under her own name. What we know about her work comes from later sources, mainly the Byzantine encyclopedia known as the Suda, the letters of her student Synesius, and the historian Socrates.
According to the Suda, she wrote commentaries on:
- Diophantus’s Arithmetica, a foundational text on solving equations.
- Apollonius’s Conics, the classic study of ellipses, parabolas and hyperbolas.
- Ptolemy’s astronomical works.
She also worked alongside her father on his commentary on Ptolemy’s Almagest, the great astronomy handbook of the ancient world, and she may have helped prepare his edition of Euclid’s Elements. Historians debate how much of this was her own original research and how much was careful editing and teaching, which in that era was serious scholarly work in its own right.
A Teacher of Philosophy
Hypatia was also a philosopher in the Neoplatonist tradition, the school of thought descended from Plato and Plotinus. Socrates Scholasticus writes that she “succeeded to the school of Plato and Plotinus” and explained its principles to her listeners. She taught pagans and Christians alike, and she was known for her composure and dignity. She often appeared before city officials, which was unusual for a woman of her time.
Synesius and the Astrolabe
One of her most devoted students was Synesius of Cyrene, who later became a Christian bishop. His surviving letters are warm and full of admiration for her, and his writings show him designing an astrolabe, an instrument for modeling the sky, drawing on what he had learned in her circle. In one letter he asks her to have a hydroscope made, a device that matches what we would now call a hydrometer, used to measure the density of liquids. Some popular accounts claim she invented the hydrometer, but that is not supported: such instruments were already known before her time.
Her Death in 415 AD
What led to her death was politics as much as anything else. Alexandria was a tense city. Orestes, the Roman prefect who governed it, was locked in a bitter feud with Cyril, the city’s powerful bishop. Hypatia was a respected advisor and frequent visitor of Orestes.
Socrates reports that a rumor spread among some Christians that she was the one keeping Orestes from reconciling with Cyril. In March 415, during Lent, a mob led by a man named Peter dragged her from her carriage, took her to a church called the Caesareum, and murdered her. Socrates, himself a Christian, wrote that the killing brought disgrace on Cyril and the whole Alexandrian church. How directly Cyril was involved remains debated by historians.
Busting a Popular Myth
You have probably seen quotes like “Reserve your right to think, for even to think wrongly is better than not to think at all” shared with Hypatia’s name on them. She never said it. These lines come from Elbert Hubbard’s largely fictional 1908 booklet about her. The same goes for the popular claim that a figure in Raphael’s School of Athens is Hypatia: it is a fun idea, but there is no evidence for it.
Her Legacy
The real Hypatia doesn’t need invented quotes. She was a woman who taught mathematics, astronomy and philosophy at the highest level in one of the great intellectual cities of the ancient world, and she was admired across religious lines. Over the centuries she became a symbol: of learning, of free inquiry, and of the cost when politics turns violent. Writers, painters and scientists have kept returning to her story, and her name lives on in the journal Hypatia, in asteroid 238 Hypatia, and in the crater Hypatia on the Moon.
A small note from the studio: Hypatia’s story has inspired a new women’s hoodie coming soon to the Inner Vision Artworks store. Stay tuned.
Sources
- Socrates Scholasticus, Ecclesiastical History, Book 7, Chapter 15: https://www.newadvent.org/fathers/26017.htm
- MacTutor History of Mathematics, “Hypatia of Alexandria”: https://mathshistory.st-andrews.ac.uk/Biographies/Hypatia/
- Wikipedia, “Hypatia”: https://en.wikipedia.org/wiki/Hypatia
- Encyclopaedia Britannica, “Hypatia” (Michael Deakin): https://www.britannica.com/biography/Hypatia
- World History Encyclopedia, “Hypatia of Alexandria”: https://www.worldhistory.org/Hypatia_of_Alexandria/
- Suda On Line: https://www.cs.uky.edu/~raphael/sol/sol-html/
- Image: https://commons.wikimedia.org/wiki/File:Hypatia_portrait.png