勇气是知道什么不该畏惧。

For the best results with your children， spend only half the money you think you should， but double the time with them.

真正的智慧在于了解自己的无知。

善待每个人，然后照亮夜晚。

The true artist creates his own world.

The more a person limits himself, the more resourceful he becomes.

数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。

I don’t let opinions influence me, I let them inform me.