Stoicism

n. quality of being emotional, impassiveness, quality of being unaffected by strong emotions

Stoicism is a school of Hellenistic philosophy, founded by Zeno of Citium in Athens in the early third century BC. It proved to be a popular and durable philosophy, with a following throughout Greece and the Roman Empire from its founding until all the schools of philosophy were ordered closed by the Christian emperor Justinian I in the year AD 529 because of their pagan character. The core doctrine of Stoicism concerns cosmic determinism and human freedom, and the belief that virtue is to maintain a will that is in accord with nature.
See more at Wikipedia.org...

Noun
1. (philosophy) the philosophical system of the Stoics following the teachings of the ancient Greek philosopher Zeno
(hypernym) philosophical doctrine, philosophical theory
(classification) philosophy

Noun
1. an indifference to pleasure or pain
(synonym) stolidity, stolidness
(hypernym) unemotionality, emotionlessness

(n.)
The opinions and maxims of the Stoics.
  

(n.)
A real or pretended indifference to pleasure or pain; insensibility; impassiveness.
  

stoicism