孔子说：“我十五岁立志于学习，三十岁有所建树，四十岁不困惑，五十理解自然规律，六十明辨是非，七十随心所欲，不违规。”
Sustainable development is not an option, but a necessity for the coal sector.
Science is not only a discipline of reason but also one of romance and passion.
我们都是小虫。但我是发着光的小虫。
And when two such people encounter each other, and their eyes meet, the past and the future become unimportant. There is only that moment, and the incredible certainty that everything under the sun has been written by one hand only. It is the hand that evokes love, and creates a twin soul for every person in the world. Without such love, one's dreams would have no meaning.
可持续的世界始于可持续的选择。