I prefer to supervise the whole operations of the government myself rather than entrust the public business to subordinates.
Art can be a way of making sense of chaos.
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))。
在物理学的世界里,我们经常发现最简单的问题最难回答。
The energy you put out is the energy you get back.