教学最重要的部分是教授什么是知识。
The most important part of teaching is to teach what it is to know.
I write to find out what I think.
I think that the role of the mathematician is to discover these patterns and to explain them.
The only limit to our realization of tomorrow will be our doubts of today.
I'm not afraid to take a stand. Everybody come take my hand. We'll walk this road together, through the storm. Whatever weather, cold or warm.