I have often spoken about work, especially during the discussions of Maverick Software Development.
In physics I learned:
work = force X distance (w = f*d)
However, what about work when we are talking about a career?
work = duty + character
The work one has done at the end of the day, the quality of the work, the results of the work, and the market for which the work is done is reflected by the worker's understanding of duty and their individual character.
Think about that.