当你在一生中做某事做得最好时,你真的不想放弃——对我来说就是网球。
Music is my life and my life is music.
出自唐代诗人李绅的《悯农》,李子柒在视频中引用过。
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。
The market is a pendulum that forever swings between unsustainable optimism (which makes stocks too expensive) and unjustified pessimism (which makes them too cheap). The intelligent investor is a realist who sells to optimists and buys from pessimists.