The most dangerous phrase in the language is, 'We've always done it this way.'

I'm a firm believer that you create your own luck.

可持续发展必须成为煤炭行业每个决策的核心。

"The world is a book, and those who do not travel read only one page."

The arithmetic of modular forms is a key to understanding the deeper structures of number theory.

I don't let the world change my smile.

The truth isn't always beauty, but the hunger for it is.

I'm a black American, I am proud of my race. I am proud of who I am. I have a lot of pride and dignity.

要有继续追逐梦想的勇气。

唯一真正的发现之旅不是去陌生的地方，而是拥有其他的眼睛，通过另一个人的眼睛，一百个其他人的眼睛来观察宇宙。