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一個觀念的價值在于它的實際后果。

The universe is not only stranger than we imagine, it is stranger than we can imagine.

我并不完美，但我每天都在努力變得更好。

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.

The same principles which at first view lead to skepticism， pursued to a certain point， bring men back to common sense.