The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.

The true historian is a soldier of truth.

"I'm a perfectionist, I admit it. I'm always trying to improve."

煤炭的未来取决于我们创新和减少其环境影响的能力。

I think the key to success is to be passionate about what you're doing.