Zeno of Citium (c. 334 – c. 262 BC) was a Hellenistic philosopher from Cyprus and the founder of Stoicism.
His philosophy emphasized living in harmony with nature and practicing virtue to attain peace of mind (ataraxia).
Zeno's teachings influenced ethics, logic, and natural philosophy, laying the foundation for Stoicism's prominence during the Roman era and beyond.
Despite losing his original writings, Zeno's ideas survived through the works of later Stoics like Cleanthes and Chrysippus.