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计算复杂性理论的发展向我们展示了并非所有问题都是平等的。
The development of computational complexity theory has shown us that not all problems are created equal.
Challenges are opportunities in disguise—embrace them.
穷人的真正悲剧是他们除了自我否定外什么都负担不起。
I'm not afraid to be vulnerable. That's where true strength comes from.
I don't wait for moods. You accomplish nothing if you do that. Your mind must know it has got to get down to work.
The past is never dead. It's not even past.