I like to say that I'm not a politician, I'm a citizen who cares deeply about my country.
永远不要停止学习,因为世界永远不会停止变化。
The true challenge in mathematics is not solving problems, but asking the right questions.
They are not monuments, but footprints. A monument only says, 'At least I got this far,' while a footprint says, 'This is where I was when I moved again.'