沉默并不总是智慧的标志，但喋喋不休总是愚蠢的标志。
"Silence is not always a sign of wisdom, but babbling is always a sign of folly."
用我们的教学方法，导师教得少，但却观察得多。
朋友可以来来去去，但精神却永远常驻。
The first step in liquidating a people is to erase its memory. Destroy its books, its culture, its history. Then have somebody write new books, manufacture a new culture, invent a new history. Before long the nation will begin to forget what it is and what it was.
On the path of science, failure and success are equally important; they are both steps towards truth.
Efficiency without creativity is just busywork.
数学研究是一场没有终点的旅程。
