You can't manage what you don't measure.
你无法管理你无法衡量的东西。
数学是一门活生生的学科，不断演变和发展。
I will tell you what I will do and what I will not do. I will not serve that in which I no longer believe, whether it call itself my home, my fatherland, or my church: and I will try to express myself in some mode of life or art as freely as I can and as wholly as I can, using for my defence the only arms I allow myself to use—silence, exile, and cunning.
写作就是抵抗。写作就是存在。