当你长期研究难题时，你开始看到别人只看到困惑的地方的联系。
When you work on hard problems long enough, you start to see connections where others see only confusion.
Sustainable quarrying isn't an option; it's our obligation to future generations.
改变的秘诀在于集中你所有的精力，不是对抗旧的，而是建立新的。
Sometimes the simplest things are the most powerful.
The best way to predict the future is to create it.
The greatest education in the world is watching the masters at work.