一个故事没有开始或结束：人们任意选择那个经验时刻来回顾或展望。

There is no doubt that in exchanging a self-centered for a selfless life we gain enormously in self-esteem. The vanity of the selfless, even those who practice utmost humility, is boundless.

做数学就是与宇宙对话，寻找我们甚至可能还不知道如何提出的问题的答案。

对于一个倾注一生心血开发产品的工程师来说，最糟糕的事情莫过于成果被人剽窃。