A good mathematician is lazy, but in a constructive way.

I'm the No. 1 human being in music. That means any person that's living or breathing is No. 2.

不了解人的缺点，不了解人的优点，不了解人优点中的缺点，不了解人缺点中的优点，就不可以随便用人，不可以随便教人。