Innovation is not about technology, it's about solving real problems.

I don't like to do easy things. I like to do things that are challenging and that push me.

种树的最佳时间是20年前，次佳时间是现在。

I do not know much about it, but I think some of America's best young men served in this war.

"The 21st century is oppressed by a crushing sense of finitude and exhaustion."

Every challenge is an opportunity in disguise.

"In the vastness of the cosmos, every discovery is a step closer to understanding our place in it."