领导力在于做出今天艰难的决定，这些决定将为子孙后代带来益处。
Leadership is about making tough decisions today that will benefit generations tomorrow.
Coal is not just a commodity, it's a commitment to America's future.
I think it's really important to be able to laugh at yourself and not take yourself too seriously.
There is only one thing that makes a dream impossible to achieve: the fear of failure.
The study of truth requires a considerable effort - which is why few are willing to undertake it out of love of knowledge - despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.
生活对我们任何人来说都不容易。但那又怎样？我们必须有毅力，最重要的是对自己有信心。我们必须相信我们在某方面是有天赋的，而且这个目标必须实现。
The most important thing in trading is to protect your capital.
如果你掉进了黑暗里，你能做的，不过是静心等待，直到你的双眼适应黑暗。
The language of molecules is universal, and we are just learning to speak it.
