自守表示的研究是数学知识统一性的反映。

It must be remembered that while sympathy with joy intensifies the sum of joy in the world., sympathy with pain does not really diminish the amount of pain. It may make man better able to endure evil, but the evil remains.

"I write to escape myself, but I always end up finding myself."

Every discovery in science opens up a new set of questions, and that's what makes it so exciting.

读书最要紧的就是勤学好问，做人最要紧的就是实实在在而持之以恒。