一个好的数学问题的定义是它产生的数学,而不是问题本身。
Strategy is not about predicting the future, but about preparing for it.
The power of words is that they can create worlds.
The more you know yourself, the more patience you have for what you see in others.
你无法管理你无法衡量的东西。
"The world is full of obvious things which nobody by any chance ever observes."
To write is to fight against oblivion.