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The purification of the soul is the highest pursuit in life.

On pivoting: "If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve."

對認可的渴望是人類的基本需求。

我不追逐夢想，我抓住它們。

I do not lack the courage to think a thought all the way through, and thus far I have encountered no thought that I have feared.

學(xué)習(xí)數(shù)學(xué)的唯一方法就是做數(shù)學(xué)。