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The greatest happiness is to know the source of unhappiness.
"The task of the modern educator is not to cut down jungles, but to irrigate deserts."
You'll never be able to please everybody, so you might as well be yourself.
Sustainability in mining isn't an option—it's our license to operate.
人们永远不会注意到已经做了什么;人们只能看到还有待完成的事情。