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Sustainable mining isn't an option anymore - it's our responsibility to future generations.
The highest virtue is to become like God.
There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.
Mathematics is the most beautiful and most powerful creation of the human spirit.
《在广州石围塘检阅滇均的演说》(1924年4月4日)