Cleanthes

Cleanthes
Cleanthes, engraving from 1605
Born	c. 330 BC Assos (now Ayvacık, Çanakkale, Turkey)
Died	c. 230 BC Athens
Era	Hellenistic philosophy
Region	Western philosophy
School	Stoicism
Main interests	Physics, ethics

Cleanthes (/kliˈænθiːz/; Greek: Κλεάνθης; c. 330 BC – c. 230 BC), of Assos, was a Greek Stoic philosopher and boxer who was the successor to Zeno of Citium as the second head (scholarch) of the Stoic school in Athens. Originally a boxer, he came to Athens where he took up philosophy, listening to Zeno's lectures. He supported himself by working as a water-carrier at night. After the death of Zeno, c. 262 BC, he became the head of the school, a post he held for the next 32 years. Cleanthes successfully preserved and developed Zeno's doctrines. He originated new ideas in Stoic physics, and developed Stoicism in accordance with the principles of materialism and pantheism. Among the fragments of Cleanthes' writings which have come down to us, the largest is a Hymn to Zeus. His pupil was Chrysippus who became one of the most important Stoic thinkers.