-106 – -43
Marcus Tullius Cicero (106–43 BCE) was a Roman statesman, orator, and philosopher who served as the primary conduit for transmitting Greek philosophy to the Latin-speaking world. Drawing eclectically from Academic Skepticism, Stoicism, and Peripatetic thought, he developed influential treatments of natural law, duty, and the nature of the gods. His philosophical writings preserved much Hellenistic philosophy that would otherwise be lost, and shaped later Latin Christian thought through figures such as Augustine.
Synthesized and transmitted Greek philosophical schools (Stoic, Academic, Peripatetic) into Latin for the Roman world
Developed natural law theory in political philosophy via De Re Publica and De Legibus
Articulated a probabilist epistemology rooted in Academic Skepticism (De Natura Deorum, Academica)
Established Latin philosophical vocabulary that persisted through the medieval period
Authored De Officiis, a foundational text in Western ethics on duty, virtue, and moral conflict