Confucious said that real knowledge is knowing the extent of one's ignorance.Aristotle and Socrates said the same thing.Is it a skill that can be taught or learned? It probably can, if you have enough of a stake riding on the outcome...

出门没有衣服,进家没有粮食,内心积有耻辱之感,就会一起来发动暴乱,而且无法禁止。小槛黄花共醉

We have more technology and fewer meanings.

我不会让任何人支配我的生活。