Zeno of Citium
Notes
Zeno of Citium (c. 334–262 BC), Cypriot merchant who lost his cargo in a shipwreck, wandered into an Athenian bookshop, and founded Stoicism, named after the painted porch (stoa) where he taught. Not the Zeno of the paradoxes.
Wikipedia: https://en.wikipedia.org/wiki/Zeno_of_Citium