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In computational complexity, we are not just dealing with the limits of what we can compute, but also with the limits of what we can prove.

Thinking is the hardest work there is, which is probably the reason why so few engage in it.

我不是一個回頭看的人，我總是向前看。

永遠別去愛一個把你當一般人對待的人。

Security is not a product, but a process.