A manager was about to be fired, but a programmer who worked for him invented a new program that became popular and sold well.

A manager was about to be fired, but a programmer who worked for him
invented a new program that became popular and sold well. As a result, the
manager retained his job.
The manager tried to give the programmer a bonus, but the programmer
refused it, saying, "I wrote the program because I though it was an interesting
concept, and thus I expect no reward."
The manager, upon hearing this, remarked, "This programmer, though he
holds a position of small esteem, understands well the proper duty of an
employee. Lets promote him to the exalted position of management consultant!"
But when told this, the programmer once more refused, saying, "I exist
so that I can program. If I were promoted, I would do nothing but waste
everyone's time. Can I go now? I have a program that I'm working on."
-- Geoffrey James, "The Tao of Programming"