Marcus Aurelius Antoninus (121-180 AD) was a Roman emperor who ruled from 161 to 180 AD, and is also renowned as a Stoic philosopher. Born in Rome, he belonged to the Nerva-Antonine dynasty and is considered one of the "Five Good Emperors". Aurelius is regarded as the last emperor of the Pax Romana, a period of relative peace for the Roman Empire.
Aurelius is best known for his philosophical pursuits, particularly his adherence to Stoicism, which emphasizes reason, self-restraint, and acceptance of fate. His philosophical reflections were captured in "Meditations," a collection of personal writings that offer insights into his efforts to live a virtuous life in accordance with Stoic principles. As emperor, Marcus Aurelius faced numerous military conflicts, defending the empire against threats from Parthians and Germanic tribes. He also focused on refining existing laws and improving conditions for vulnerable groups, such as widows, minors and slaves. He served as Roman consul in 140, 145, and 161.