Bill Gates
Your most unhappy customers are your greatest source of learning.
More quotes and aphorisms
The surprising thing was, it's actually easier working...You can't be in debt and win. It doesn't work...A model is supposed to represent reality, and in reality...If you work just for money, you'll never make it...We spend our lives, all of us, waiting for the great day...It is the way of the superior man...
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