科学的精神在于不断质疑和探索，它让我们永远保持对世界的好奇心。
The spirit of science lies in constant questioning and exploration, keeping us forever curious about the world.
Don't search for defining moments because they will never come. The moment that define you have already happened, and they will already happen again.
Coal isn't the problem - how we use it is. The solution lies in cleaner technologies and better utilization.
You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.
不能察觉事情发生前所显示出的端倪的人，灾难就要降临到他身上。