Boredom
BOREDOM:
Ennui has made more gamblers than avarice, more drunkards than thirst, and perhaps as many suicides as despair.
BOREDOM:
Man is the only animal that can be bored.
BOREDOM:
Any idiot can face a crisis; it's day to day living that wears you out.
BOREDOM:
A man can stand almost anything except a succession of ordinary days.