I just finished a book called The Ultimate Question by Fred Reichheld of Bain & Company where he describes NPS (Net Promoter Score). The NPS is based on one question that drills down to the essence of a customers experience with any company and how that affects profits. Moreover, he explains the NPS and its affects in terms of an employee's experience with the companies they work for.
While I don't want to spoil the fun and tell you what the question is, I will say this it's premise is based on the Golden Rule. Steve Farber wrote a great post on the Golden Rule, check it out: The Ethic of Reciprocity. It speaks to the transference of the principle across multiple religions and philosophy's. Take the time to read the web site he refers to and let it sink in, I can tell you I need a lot of work applying this in my life.