The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.

"Language is the house of being. In its home man dwells."

合理储蓄，积极投资。学习你所应学。

善良的行为是最高尚的美德。

一个人的首要职责是为自己思考。

生活中唯一真正的失败是不忠于自己所知道的最好的东西。