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The past is a ghost that won’t stop haunting you.

It is not the creation of wealth that is wrong, but the love of money for its own sake.

"The security of quantum communication comes from the laws of physics, not from computational complexity."

我不是天才，但是我在某些事情上很聰明，我就只關注這些事情。

譯文：想要看清一個人，應當看看他交的是什么朋友。