I believe in the discipline of mastering the best that other people have ever figured out. I don’t believe in just sitting down and trying to dream i… - Charlie Munger

It's amazing how intelligent it is just to spend some time sitting. A lot of people are way too active.

It is not usually the conscious malfeasance of your narrow professional adviser that does you in. Instead, your troubles come from his subconscious bias. His cognition will often be impaired, for your purposes, by financial incentives different from yours. And he will also suffer from the psychological defect caught by the proverb “To a man with a hammer, every problem looks like a nail.

The second helpful notion mimics Galileo’s50 conclusion that scientific reality is often revealed only by math as if math was the language of God. Galileo’s attitude also works well in messy, practical life. Without numerical fluency, in the part of life most of us inhabit, you are like a one-legged man in an ass-kicking contest.