树橘柚者，食之则甘，嗅之则香；树枳棘者，成而刺人。故君子慎所树。
译文：种植橘柚，吃起来是甜的，闻起来是香的；种植枳棘，长大了却会刺人。所以君子要谨慎地选择所要培养的人才。
The truth will set you free, but first it will piss you off.
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.
To write is to resist forgetting.
I don't follow trends. I set them.
你看得越多，看到的就越多。
我们需要设计符合人类心理的政策，而不是与之相悖。
我在数学上花的时间越多，我就越兴奋。