Innovation is not about working behind closed doors but about standing on the shoulders of giants to go further.
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 mind is a system of coordinated sensations.
我明白了人们会忘记你说过的话,忘记你做过的事,但他们永远不会忘记你给他们的感受。
We don't try to outsmart the market; we try to understand it.