数学的美在于它既精确又富有创造性。

Don't wait until they tell you, you are ready. Show it. Do it.

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.

Every generation imagines itself to be more intelligent than the one that went before it, and wiser than the one that comes after it.

最激动人心的发现往往来自意想不到的地方。