We've learned that change is necessary for growth.

Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government," and as such constituted the "end of history."

The closer you are to death, the more alive you feel. It's a wonderful way to live. It's the only way to live.

最伟大的定理是那些揭示隐藏联系的定理。

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

数学的美在于它是一种可以以其他任何方式都无法描述宇宙的语言。

People like us in situations like this, we gotta make sure they see us.

The customer may not always be right, but they always come first.

解决数学问题的喜悦是无与伦比的；这是纯粹的智力胜利的时刻。

创新是经济增长的关键驱动力，我们必须创造培育创新的环境。