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"A story has no beginning or end: arbitrarily one chooses that moment of experience from which to look back or from which to look ahead."

數(shù)學(xué)證明的優(yōu)雅在于它的簡(jiǎn)潔和清晰。

In the part of this universe that we know there is great injustice， and often the good suffer， and often the wicked prosper， and one hardly knows which of those is the more annoying.

當(dāng)每一分錢都要精打細(xì)算，犯錯(cuò)的空間就消失了。