光是关键。没有光，就没有图像。
In mathematics, the journey from question to answer is often more enlightening than the answer itself.
Collaboration across borders is key to solving global food challenges.
让美国再次伟大！
The truth is not always what it seems, and sometimes it is better not to know it.
The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.