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唯一存在的限制是你给自己设定的。
The only limits that exist are the ones you place on yourself.
The elegance of a mathematical proof is akin to the beauty of a well-crafted algorithm.
如果你总是做你一直在做的事情,你会得到你一直得到的东西。
Writing is like sex. First you do it for love, then you do it for your friends, and then you do it for money.