投票给承诺最少的人；他将是最不令人失望的。
What we know is not much. What we do not know is immense.
The greatest happiness is to know the source of unhappiness.
能源的未来不是非此即彼的选择，而是在传统能源和新能源之间找到适当的平衡。
The last time I was intimidated was when I was 6 years old in karate class.
There are no eternal facts， as there are no absolute truths.
The only limit to our realization of tomorrow is our doubts of today.