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Charlie Munger's Principles

Overview

Helped shift Berkshire's approach from cheap assets toward wonderful businesses.

Style

Mental models, business quality, patience

Firm

Berkshire Hathaway

Period

1924-2023

Charlie Munger

Principles

Repeatable rules that beginners can study and adapt.

Applicable principles

Invert problems by first avoiding obvious stupidity.

Use multiple mental models rather than one discipline.

Wait patiently for clear opportunities instead of trading constantly.

Business quality can matter more than surface cheapness.

Turn these principles into a pre-investment checklist. If an idea cannot pass the checklist, staying out is often better than forcing action.