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...
"What is a poet? An unhappy person who conceals profound anguish in his heart but whose lips are so formed that as sighs and cries pass over them they sound like beautiful music."
"In mathematics, you don't understand things. You just get used to them."
We don't make objects, we make places.
即使在热带地区，晚上的气温也比你想象的要凉。打包得暖和一点。
Optimism is a learned skill. Once you learn it, you can improve your life in every way.