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Mental processes are tools for living, and their worth is in their use.

宇宙是可以理解的，因?yàn)樗芪覀兡軌蚶斫獾姆▌t支配。

We must learn from nature how to use resources efficiently.

The future of coal is not about the past; it's about innovation and sustainability.

Don‘t waste your time on a man/woman， who isn‘t willing to waste their time on you。