过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。
压力是一种特权。这意味着你有机会做一些伟大的事情。
The most important skill in mathematics is the ability to ask the right questions.
If you don't give up, you still have a chance. Giving up is the greatest failure.
"A book is a gift you can open again and again."
技术应该为人类服务，而不是反过来。
People are just as wonderful as sunsets if you let them be. When I look at a sunset, I don't find myself saying, "Soften the orange a bit on the right hand corner." I don't try to control a sunset. I watch with awe as it unfolds.
