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你的最不滿意的顧客是你最大的學習源。

Writing is the only thing that, when I do it, I don't feel I should be doing something else.

Friends congratulate me after a quarterly-earnings announcement and say, 'Good job, great quarter.' And I'll say, 'Thank you, but that quarter was baked three years ago.'

數學不是關于數字、方程、計算或算法的：它是關于理解的。