每个人在世界上都有一个位置要填补，并且在某些方面是重要的，无论他是否选择如此。
Every individual has a place to fill in the world and is important in some respect whether he chooses to be so or not.
We need to be part of the solution, not part of the problem.
The greatest risk lies in not knowing what you're doing.
一个人的性格就是他的命运。
煤炭的未来在于清洁高效利用。