“Marcus Cicero is famous for saying that the man who doesn’t know what happened before he was born goes through life like a child. That is a very correct idea. If you generalize Cicero, as I think one should, there are all these other things that you should know in addition to history. And those other things are the big ideas in all the other disciplines. It doesn’t help just to know them enough so you can [repeat] them back on an exam and get an A. You have to learn these things in such a way that they’re in a mental latticework in your head and you automatically use them for the rest of your life. If you do that I solemnly promise you that one day you’ll be walking down the street and you’ll look to your right and left and you’ll think “my heavenly days, I’m now one of the of the few most competent people in my whole age cohort.” If you don’t do it, many of the brightest of you will live in the middle ranks or in the shallows.”
Charlie Munger