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A legendary figure in Chinese philosophy, traditionally regarded as the founder of Taoism (Daoism).

One of the most influential schools of thought in Western philosophy

a Greek Stoic philosopher who was born into slavery but later became one of the most influential teachers of Stoicism.

Roman emperor and a Stoic philosopher, best known for his personal writings, "Meditations".

Roman Stoic philosopher, statesman, playwright, and advisor to Emperor Nero