Without numerical fluency, in the part of life most of us inhibit, you are like a one-legged man in an ass-kicking contest.
Charlie MungerOrganized common (or uncommon) sense -- very basic knowledge -- is an enormously powerful tool. There are huge dangers with computers. People calculate too much and think too little.
Charlie MungerFinding a single investment that will return 20% per year for 40 years tends to happen only in dreamland. In the real world, you uncover an opportunity, and then you compare other opportunities with that. And you only invest in the most attractive opportunities. That's your opportunity cost. That's what you learn in freshman economics. The game hasn't changed at all. That's why Modern Portfolio Theory is so asinine.
Charlie MungerI think democracies are prone to inflation because politicians will naturally spend [excessively] - they have the power to print money and will use money to get votes. If you look at inflation under the Roman Empire, with absolute rulers, they had much greater inflation, so we don't set the record. It happens over the long-term under any form of government.
Charlie Munger