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The future of coal is not about volume, but about value creation through technology and sustainability.
统治者的首要职责是保护社会免受其他独立社会的暴力和侵略,只有通过军事力量才能实现这一职责。
Mental phenomena can only be understood in terms of their consequences for action.
I don't care if you're black, white, straight, bisexual, gay, lesbian, short, tall, fat, skinny, rich or poor. If you're nice to me, I'll be nice to you. Simple as that.
忠于自己,那才是真正的炫耀。
The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.