The essence of mathematics lies in its freedom.

"I’m a very positive thinker, and I think that is what helps me the most in difficult moments."

Language is the house of being. In its home man dwells. Those who think and those who create with words are the guardians of this home.

A sense of responsibility is the mark of a noble character.

但我想让你们知道，任何事情的一开始对于我们未必明朗，正如我所说我19岁（1973年）就开始上电视，然而到了1994年我才渐渐清楚，所以不要期待一下子就想清楚、并马上明白自己的使命。

职业生涯是攀爬架，而不是梯子。