Everyone has the brainpower to follow the stock market. If you made it through fifth-grade math, you can do it.
自信不是来自永远正确,而是来自不怕犯错。
不学习历史的人注定要重复错误。
I'm not a politician, I'm an artist. And I think the artist's role is to be a mirror to society.
形式系统的发展彻底改变了我们对数学的理解。