Episode notes
The man behind Leonardo da Vinci's Vitruvian Man was a Roman military engineer whose full name historians still are not sure of. Born around 80 to 70 BC, Vitruvius served Julius Caesar as a praefectus fabrum, building torsion artillery like the ballista and the scorpio, and likely served in North Africa, Hispania, and Gaul, including the siege of Alesia in 52 BC, where Roman double walls trapped Vercingetorix and left civilians starving between the lines. After Caesar's death, a pension secured through Octavia Minor, the emperor's sister, let him write De Architectura, the only major architectural treatise to survive from classical antiquity.
He demanded that architects master geometry, history, philosophy, music, medicine, law, and astronomy, and held that every building needs firmitas, utilitas, and venustas: strength, utility, and beauty. He described the well proportioned human body fitting inside both a circle and a square, the passage Leonardo drew about 1,500 years later. The book lay forgotten until Poggio Bracciolini found it in a Swiss abbey in 1414, after which it became the manual for Renaissance builders. His only claimed building, a basilica in Fano finished around 19 BC, was lost for 2,000 years until archaeologists uncovered matching footings in January 2026.
- His warning against lead water pipes, based on the sickness of lead miners
- The hypocaust, which heated floors and walls with furnace gases flowing under raised tiles
- Tuned bronze or clay jars that amplified actors' voices in theaters
- An odometer that dropped a pebble into a bucket with each turn of the wheel
- The only surviving account of Archimedes, the king's gold crown, and the cry of eureka