Zeno is the founder of Stoicism, an influential philosophical movement deriving its name from the Stoa (portico) where he used to teach.
Citation:
Bouchard, Elsa. "Zeno of Citium (in Cyprus) at Athens".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11303, accessed 25 May 2013.]