I think that the thing that makes mathematics worthwhile is the fact that it has this incredible structure that you can explore and discover.
世界上最危险的事情是试图分两次跨越鸿沟。
写作是一种爱的行为。
Diversity in thought leads to innovation; diversity in people leads to strength.
It is a first principle of human action that a man does what he believes will satisfy his desires.
The truth is rarely pure and never simple.
书籍是灵魂的镜子。