科学家不是给出正确答案的人，而是提出正确问题的人。
The scientist is not a person who gives the right answers, he's one who asks the right questions.
The best leaders are those who listen more than they speak.
I'm not a gambler. I don't believe in luck. I believe in hard work and preparation.
我们不能忽视煤炭的经济作用，但也不能忽视其环境影响。