Opportunity cost is a huge filter in life. If you've got two suitors who are really eager to have you and one is way the hell better than the other, you do not have to spend much time with the other. And that's the way we filter out buying opportunities.
Charlie MungerYou don't have to have perfect wisdom to get very rich - just a bit better than average over a long period of time.
Charlie MungerIf you have competence, you know the edge. It wouldnt be a competence if you didnt know where the boundaries lie. Asking whether youve passed the boundary is a question that almost answers itself.
Charlie Munger