It is necessary from the very nature of things that power should be a check to power.
I'm not afraid to speak my mind.
所以,天地不夸耀自己的明亮,大水不夸耀自己的清澈,大火不夸耀自己的炎烈,有德之君不夸耀自己德行的高远,这样才能做众人的领袖。 
实现净零排放的道路并不容易,但这对我们的生存是必要的。
"A key insight in computational learning theory is that the complexity of a learning problem is determined by the complexity of the hypothesis space and the amount of data available."