Marcus Tullius Cicero was a Roman statesman, lawyer, scholar, and philosopher who played a critical role in the political life of the late Roman Republic. He is considered one of Rome's greatest orators and prose stylists. Cicero introduced the Romans to the chief schools of Greek philosophy and created a Latin philosophical vocabulary. His works on philosophy — including De Officiis (On Duties), De Amicitia (On Friendship), and De Senectute (On Old Age) — distill Greek philosophical thought for a Roman audience and advocate a life guided by reason, duty, and moral integrity. Cicero was murdered during the proscriptions of the Second Triumvirate, but his writings survived to become foundational texts of Western intellectual life.

Marcus Aurelius was Roman emperor from 161 to 180 AD and a Stoic philosopher. He was the last of the rulers known as the Five Good Emperors. Born into a prominent family, he was adopted by Emperor Antoninus Pius and eventually succeeded him. During his reign, the Roman Empire faced military conflicts with Parthia, the Marcomannic Wars, and the Germanic tribes. Despite these challenges, Marcus Aurelius is best remembered for his Meditations, a series of personal writings in Greek that record his private notes on Stoic philosophy. These writings, never intended for publication, offer a remarkable window into the inner life of a Roman emperor striving to live according to Stoic principles — emphasizing duty, self-discipline, acceptance of fate, and the transient nature of life.

Epictetus was a Greek Stoic philosopher born into slavery in Hierapolis, Phrygia (present-day Turkey). He lived in Rome until his exile, after which he spent the rest of his life in Nicopolis, Greece. His teachings were written down and published by his student Arrian in the Discourses and the Enchiridion. Epictetus taught that philosophy is a way of life and not merely a theoretical discipline. He believed that individuals are responsible for their own actions, which they can examine and control through rigorous self-discipline. Central to his philosophy is the distinction between what is within our control (our judgments, intentions, desires, aversions) and what is not (our bodies, possessions, reputation, other people). He urged people to focus only on what is within their control and to accept what is not.