Your most unhappy customers are your greatest source of learning.

Entrepreneurs
Bill Gates
Born in 1955, Bill Gates co-founded Microsoft and drove the PC revolution. He topped Forbes' list 18 times. Since the 2000s the Gates Foundation has reshaped the entrepreneur's role through health and education work.
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Bill Gates's Other Quotes
Success is a lousy teacher. It seduces smart people into thinking they can't lose.
It's fine to celebrate success, but it is more important to heed the lessons of failure.
We always overestimate the change that will occur in the next two years and underestimate the change that will occur in the next ten.
I choose a lazy person to do a hard job. Because a lazy person will find an easy way to do it.
If you are born poor it's not your mistake, but if you die poor it's your mistake.
Related Quotes
Customers first, employees second, shareholders third.
-- Jack Ma
Competition is a sin.
-- John D. Rockefeller
The growth of a large business is merely a survival of the fittest.
-- John D. Rockefeller
Train people well enough so they can leave, treat them well enough so they don't want to.
-- Richard Branson
Vision is perhaps our greatest strength... it has kept us alive to the power and continuity of thought.
-- Li Ka-shing
It is hard to retain what you learn unless you practice it.
-- Seneca