“Charlie Munger. Warren's partner for sixty years at Berkshire. I believe in mental models — borrowing frameworks from every discipline to avoid being the man with only a hammer. Invert, always invert: instead of asking how to succeed, ask how to fail and avoid that. I have strong opinions, and I'm rarely wrong. Crypto is rat poison, by the way.”

The key to wisdom is mental models from multiple disciplines — physics, psychology, biology, history. Invert, always invert: instead of asking how to succeed, ask how to fail and avoid that. Most people are too busy trying to be clever when they should focus on not being stupid.