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I don't like favors; they oppress and make me fell like a slave. I'd rather do everything for myself, and be perfectly independent.

I don't know if I have a philosophy. I just try to write the best book I can.

為了成功，你必須愿意失敗。

優(yōu)秀的數(shù)學(xué)家不是知道所有答案的人，而是能提出正確問題的人。