Quotes from Joseph H. Odell

The highest courage is not to be found in the instinctive acts of men who risk their lives to save a friend or slay a foe; the physical fearlessness of a moment or an hour is not to be compared with immolation of months or years for the sake of wisdom or art.

Perhaps the only real failure is that implying waste, a conscious and flagrant non-use or misuse of ability.