优秀的数学家不是知道所有答案的人，而是能提出正确问题的人。
A good mathematician is not one who knows all the answers, but one who asks the right questions.
I’ve always been an optimist and I suppose that is rooted in my belief that the power of creativity and intelligence can make the world a better place.
You can't let praise or criticism get to you. It's a weakness to get caught up in either one.