Rigor in proof is what separates mathematics from all other sciences.
证明的严谨性将数学与所有其他科学区分开来。
The world is what it is; men who are nothing, who allow themselves to become nothing, have no place in it.
每一次成功只是为更困难的问题买了一张入场券。
Pressure is a word that is misused in our vocabulary. When you start thinking of pressure, it's because you've lost focus.
Let him be without suspicion who has done no wrong.
"The world is a shadow, and the shadow is a game."
Every seed we plant today is a promise to future generations.