Courage is not the absence of fear, but the triumph over it.
The most profound discoveries in mathematics often come from questioning the most basic assumptions.
数学中最深刻的发现往往来自于对最基本假设的质疑。
世界在你面前,你不需要接受它或离开它,就像你进来时那样。
If you don’t make mistakes, you’re not working on hard enough problems.