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可持續發展不是選擇，而是煤炭行業的必然要求。

There is no true liberty without the liberty of thought.

Music is my language; I use it to talk to the world.

Happiness in this world, when it comes, comes incidentally. Make it the objet of pursuit, and it leads us a wild-goose chase, and is never attained. Follow some other object, and very possibly we may find that we have cought happiness without dreaming of it.

在夜的寂靜中，作家找到了最響亮的真相。