The past is not dead, it is not even past.
过去并未死去，它甚至还未过去。
网球是一项心理游戏。每个人都健康，每个人都打出很棒的正手和反手——重要的是头脑。
I don't care what you think about me, I don't think about you at all.
Rigor in proof is what separates mathematics from all other sciences.
"The truth is rarely pure and never simple."
The greatest tragedy is not to die, but to be forgotten.