The greatest intellectual adventures often begin with a simple "What if?"
最伟大的思想冒险往往始于一个简单的"如果"。
【译文】一辈子不做不应该做的事，世界上就不会有痛恨自己的人了。
Our miners are the hardest working people in America.
Sustainability is not a cost - it's the biggest innovation opportunity of our lifetime.
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
每一项伟大的工程成就都始于一个清晰的愿景。