Galen of Pergamon
the man who invented the chart.

Galen was born in 129 AD in the Greek city of Pergamon, on the Aegean coast of what is now Turkey. His father was an architect; his early education was in philosophy and mathematics. He turned to medicine after a dream — his father's, not his — and trained for a decade across the medical centres of the eastern Mediterranean: Smyrna, Corinth, Alexandria.

He returned home at twenty-eight to take the post of physician to the gladiator school of Pergamon. It was bloody, hands-on work. The wounds gladiators brought him — abdominal ruptures, sword cuts, tendon lacerations — were unprecedented teachers. Galen famously described those wounds as windows into the body. He came out of those four years with anatomical knowledge no contemporary could match.

By 162 AD Galen had moved to Rome. Reputation followed him quickly; within a decade he was physician to the emperor Marcus Aurelius, then to his son Commodus, and later to Septimius Severus — three reigns, four decades of position close to the political centre of the Roman world.

What that position gave him was, of all things, time and parchment. He wrote almost without stopping for forty years. Treatises on anatomy, on physiology, on pharmacology, on hygiene, on logic, on the differential diagnosis of fevers. He gave public anatomical demonstrations in the Temple of Peace. And — most consequentially for medicine, though he would not have called it his most important work — he kept case notes.

Roughly half of what Galen wrote survives. Half. The other half burned in the Temple of Peace fire of 192 AD, or was lost in the long medieval attrition of Greek manuscripts in the Latin West. What did come down to us still runs to about ten thousand printed pages in modern editions — the single largest body of writing by any author from classical antiquity.

Inside those volumes, alongside the philosophy and the anatomy, are the cases. Hundreds of them. A wealthy Roman woman with insomnia. A philosopher with a tremor in his hand. A slave with a fever that came and went. For each, Galen wrote down the symptoms, the timeline, what he tried, and what happened. Read in translation, the format is uncanny — they read like a modern progress note, only in Greek.

Pulse rapid and hard. Tongue dry. Patient reports thirst since the third night. Administered… Galen didn't invent medicine. What he invented — or at least systematised and made durable — was the practice of writing the patient down.

Every chart that has been written since descends from this discipline. Medieval Arab physicians read Galen in Baghdad and copied the format into their own casebooks (Avicenna and Razi among them — both of whom lend their names to our other apps, for the same reason). Renaissance European physicians rediscovered him through those Arabic translations. The first modern hospital case logs in seventeenth-century Italy borrowed his structure. The Mayo brothers' case-card system in nineteenth-century Minnesota borrowed it again. So did the first generation of electronic health records in the 1970s, and the systems built since.

The chart, in other words, is one of medicine's oldest technologies. It has changed substrate — vellum, paper, screen — but the underlying discipline is the one Galen put in place: symptoms, timeline, treatment, outcome. Written, kept, and read again.

For seventeen centuries the chart belonged to the physician. The physician wrote it, the physician kept it, the physician read it. The patient was the subject of the chart, not the owner of it.

We took Galen's name for this app because we think the next chapter of that work is changing one thing about that arrangement. The chart still gets written, just as carefully — symptoms, timeline, treatment, outcome. But the chart belongs to the patient now. They hand the key to a caregiver who needs it. They take the key back when the relationship ends. The record is theirs.

We think Galen would have understood that. He never thought of the chart as the physician's property — only as the place where the patient's story belonged. The story was always the patient's. We're just giving them the pen.