教师必须既是学生的研究者，也是学科的研究者。
Where I am, I don't know, I'll never know, in the silence you don't know, you must go on, I can't go on, I'll go on.
The best stories are those that mix the happiness and sadness of life together in the right proportions.
我认为数学之所以有价值，是因为它具有这种令人难以置信的结构，你可以探索和发现。
Home is not a place, it's a feeling.
A moment is a small piece of time, but it can be a very important piece of time.