A pure hand needs no glove to cover it.
家庭是一个生产人力资本的小工厂。
记忆不仅是个人的,也是集体的。我们通过他人记忆,他人也通过我们记忆。
释义:在早晨有所失,在晚上有所获得。
There is no such thing as a quality problem. There are only problems of people not doing what they are supposed to do.