在绘画中，手必须跟随眼睛，而眼睛必须跟随灵魂。

在每个故事中都有一片真相，即使它被谎言伪装。

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

数学研究是所有智力和精神进步不可或缺的基础。