Three rules for a career: 1) Don’t sell anything you wouldn’t buy yourself; 2) Don’t work for anyone you don’t respect and admire; and 3) Work only with people you enjoy.
Charlie MungerJust as a man working with his tools should know its limitations, a man working with his cognitive apparatus must know its limitations.
Charlie MungerSome people seem to think there's no trouble just because it hasn't happened yet. If you jump out the window at the 42nd floor and you're still doing fine as you pass the 27th floor, that doesn't mean you don't have a serious problem. I would want to address the problem right now.
Charlie MungerIf you have competence, you pretty much know its boundaries already. To ask the question (of whether you are past the boundary) is to answer it.
Charlie MungerYou must know the big ideas in the big disciplines, and use them routinely - all of them, not just a few. Most people are trained in one model - economics, for example - and try to solve all problems in one way. You know the old saying: to the man with a hammer, the world looks like a nail. This is a dumb way of handling problems.
Charlie Munger