Word Study
eudæmonism
CIDE DICTIONARY
eudæmonism, n. [Gr. a thinking happy, fr, blessed with a good genius, happy; e'y^ well, good + one's demon of genius. See Demon.].
That system of ethics which defines and enforces moral obligation by its relation to happiness or personal well-being.
For further exploring for "eudæmonism" in Webster Dictionary Online