If, in your thinking, you rely entirely on others — often through purchase of professional advice — whenever outside a small territory of your own, y… - Charlie Munger

I never allow myself to have an opinion on anything that I don't know the other side's argument better than they do.

So you have to figure out what your own aptitudes are. If you play games where other people have the aptitudes and you don’t, you’re going to lose. And that’s as close to certain as any prediction you can make. You have to figure out where you’ve got an edge. And you’ve got to play within your own circle of competence.

To get what you want, you have to deserve what you want. The world is not yet a crazy enough place to reward a whole bunch of
undeserving people.