Rationality is not just something you do so that you can make more money, it is a binding principle. Rationality is a really good idea. You must avoid the nonsense that is conventional in one's own time. It requires developing systems of thought that improve your batting average over time.
Charlie MungerIt's human nature to extrapolate the recent past into the future, but it's terrible that managements go along with this.
Charlie MungerYou've got to have models in your head and you've got to array you experience - both vicarious and direct - onto this latticework of mental models.
Charlie MungerAccounting incomes were reduced by discrepancy [ but] "the net amount paid by lawyers for lawyerly discrepancy is close to zippo. In this case, the goddess of justice was blind.
Charlie Munger