除非我能看到明确的50%收益路径，否则我从不购买任何东西。
I never buy anything unless I can see a clear path to a 50% gain.
How wonderful that we have met with a paradox. Now we have some hope of making progress.
"The act of reading is an act of empathy."
不管别人怎么说，文字和语言的确能改变世界。
数学是理性的音乐。