Cleanthes

Cleanthes of Assos was a Greek Stoic philosopher of the 3rd century BCE who succeeded Zeno of Citium as head of the Stoic school at Athens. He is remembered for deepening the religious and physical side of Stoic thought, and especially for his 'Hymn to Zeus,' a poem expressing the Stoic vision of a rational, divine order governing the universe. By tradition he supported himself by manual labor while studying.