In republican governments, men are all equal; equal they are also in despotic governments: in the former, because they are everything; in the latter, because they are nothing.
The truth is you don't know what is going to happen tomorrow. Life is a crazy ride, and nothing is guaranteed.
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))。
树木有根则繁茂，根腐则树枯萎；鱼有水才能活，水干涸了鱼则必死；灯有油才光亮，油尽则灯灭。人有真精神，保护则长寿，戕害则必死。
如果爵位不高，那么人民就不敬重他；如果俸禄不重，那么人民就不会信任他；如果在理事时没有决断权那么人民不会敬畏他。
"Cinema is a way to look at the world, to understand it, and to change it."