学习数学的唯一方法就是做数学。

The secret of joy in work is contained in one word - excellence. To know how to do something well is to enjoy it.

The salvation of the world is in man's suffering.

"The key to good research is not just the method, but the clarity of the question and the quality of the data."

"The price of greatness is responsibility."

所有公职人员的职责都是，或者至少可以变得如此简单明了，以至于有才智的人可以很容易地胜任。