我不是数学的英雄。我甚至没有那么成功;这就是为什么我不希望每个人都看着我。
事理明白则心愈能清楚而专一,心能专一则事理愈能通达流畅。
The artist must learn to see, to observe, to feel, and to think.
A man of genius makes no mistakes. His errors are volitional and are the portals of discovery.