Leadership is about making tough decisions today that will benefit everyone tomorrow.

"I hope my books can help children see the world in a different way, to notice the small details and the hidden meanings."

故事帮助我们理解生活的混乱。

I pay no attention whatever to anybody’s praise or blame. I simply follow my own feelings.

数学思想的美丽之处在于它可以跨越文化和时间被分享和理解。