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If you get up in the morning and think the future is going to be better, it is a bright day. Otherwise, it's not.
If you don’t make mistakes, you’re not working on hard enough problems. And that’s a big mistake.
记忆是一件奇怪的事情。它的运作方式并不像我想象的那样。我们习惯于把它想象成相机或录音机,但它根本不是那样的。它更像是一个画家。它创造了一幅画,但这幅画并不总是相同的。
The riddle does not exist.