Panaitios was a prominent Greek philosopher from the Hellenistic period, known for his contributions to Stoicism. He lived around 185-110 BCE and played a crucial role in adapting Stoic philosophy to Roman culture. His teachings emphasized ethics, virtue, and the importance of living in harmony with nature. Panaitios was also influential in shaping the ideas of later philosophers, including Seneca and Marcus Aurelius. He wrote extensively, although most of his works have been lost. His legacy remains significant in the development of Stoic thought and its integration into Roman philosophy.