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聰明的人遇上事，話到口邊會留半句；大徹大悟的人遇上事，甚至一句話都不說。

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

學習數學的唯一方法就是做數學。

The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.

沒有大膽的猜想，就沒有偉大的發現。

With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.

不懂得如何去愛卻去愛，會傷害我們所愛的人。