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幸福不是現成的，它來自你自己的行動。

I want to liberate America from fear. I want people to be afraid of the things that are really scary, like war and famine, not their neighbor because he has a different religion.

Understanding the fundamental limits of computation is crucial for the future of technology.

我們成功的真正標準是在保護資源的同時如何更好地養活世界。