23 – 79
Gaius Plinius Secundus (Pliny the Elder) was a Roman author, naturalist, and naval commander of the first century AD, best known for his encyclopedic Naturalis Historia—a 37-volume survey of natural knowledge that served as a foundational reference work throughout the medieval period. Though not a systematic philosopher, he synthesized Stoic and empiricist tendencies in his approach to nature and human affairs. He died in 79 AD while investigating the eruption of Mount Vesuvius.
Authored Naturalis Historia, the most comprehensive ancient encyclopedia of natural science
Preserved and transmitted Greek and Roman scientific and philosophical knowledge to later generations
Documented early Christian and Jewish communities in Roman sources
Advanced an empiricist methodology grounded in direct observation and compilation of testimony
Died conducting field observations at Vesuvius, exemplifying Stoic commitment to inquiry over self-preservation