真正的喜悦精神、崇高感、超越人类的感觉，这是最高卓越的试金石，在数学中同样可以在诗歌中找到。
The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.
你得先学会爬才能走，先学会走才能跑。
注意是意识的聚光灯。
实证研究中最重要的是要清楚你想要回答的问题。
"One must be an inventor to read well. There is then creative reading as well as creative writing."
我通常会说心里话，但这年头说出真心话是个错误，容易引起他人误会。
译文：厚道的人，福泽深厚；刻薄的人，福薄命浅。
"Every saint has a past, and every sinner has a future."