Every time I write a book, every time I face that blank page, I’m convinced that I can’t do it.

The difference between theory and practice is that in theory, there is no difference between theory and practice, but in practice, there is.

最大的风险是不冒任何风险。

The time which we have at our disposal every day is elastic; the passions that we feel expand it, those that we inspire contract it; and habit fills up what remains.

物理学不仅是一门科学，它是一种思考世界的方式。

Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.

有时候，最难的事情和正确的事情是同一件事。

"Life is really simple, but we insist on making it complicated."

Coal isn't the problem - how we use it is. The solution lies in cleaner technologies and better utilization.