From the ArcaMax Publishing, Vocabulary Newsletter:
http://www.arcamax.com/news/vocabulary/s-335017-443474
stoic \STOH-ik\ (noun) - 1 : (Capitalized). A member of a school of
philosophy founded by Zeno holding that one should be free from
passion, unmoved by joy or grief, and should submit without complaint
to unavoidable necessity. 2 : Hence, one who is apparently or
professedly indifferent to or unaffected by pleasure or pain, joy or
grief.
(adjective) - 1 : Of or pertaining to the Stoics; resembling the
Stoics or their doctrines. 2 : Not affected by passion; being or
appearing indifferent to pleasure or pain, joy or grief.
"A Stoic never evaded life: he faced it. A Stoic never avoided
responsibility: he accepted it. A Stoic not only believed in liberty:
he practised it." -- H. J. Duteil, 'The Great American Parade'
Stoic comes from Greek stoikos, literally "of or pertaining to a
colonnade or porch," from stoa, "a roofed colonnade, a porch,
especially, a porch in Athens where Zeno and his successors taught."