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狼群的力量在于狼，狼的力量在于狼群。

"The only thing we have to decide is what to do with the time that is given us."

Leadership in the coal industry today means navigating the delicate balance between economic necessity and environmental responsibility.

When you change the way you look at things, the things you look at change.

Quality is not a dream; it is a reality.

The only way to do great work is to love what you do.

Every life leaves behind a trail of evidence; the biographer is the detective who follows it.