To be a good mathematician, you need to have both intuition and rigor.

一支箫一把剑是我平生的志向，辜负了狂名十五年。

自动控制的根本问题是在存在干扰的情况下维持期望状态。

The most damaging phrase in the language is: 'It's always been done this way.'

The best way to predict the future is to create it.

人的状况...是一种每个人对每个人的战争状况。

动物的心脏是其生命的基础，是体内一切的主宰。