唯一真正的错误是我们从中一无所获的错误。
The only real mistake is the one from which we learn nothing.
采矿效率不仅仅是速度;而是用更少的浪费做更多的事。
书是一面镜子:如果一只猿猴往里看,使徒不太可能往外看。
To solve a problem, you have to be willing to think differently.