在数学中，提出问题的艺术必须比解决问题更有价值。
In mathematics, the art of proposing a question must be held of higher value than solving it.
The only way to do great work is to love what you do.
最大的器物最晚完成，最大的声音几乎没有声响，最大的形象没有形状。
Love is the only thing that grows when you give it away.
脾气切忌旺盛，心志切忌满足，才情切忌显露。