https://dailystoic.com/cleanthes/
Feb 16, 2021 - Who Is Cleanthes? Successor to Zeno & Second Head of the Stoic School. Cleanthes died at the age of 99 in Athens.
who iscleanthessuccessorzenoamp
https://www.wikidata.org/wiki/Q310149
Greek Stoic philosopher and boxer (3rd-century BC)
cleantheswikidata