"You have to know accounting. It's the language of practical business life. It was a very useful thing to deliver to civilization. I've heard it came to civilization through Venice which of course was once the great commercial power in the Mediterranean. However, double entry bookkeeping was a hell of an invention."
"Finding 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."
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More quotes by Charlie Munger
"The best thing a human being can do is to help another human being know more."
"Intelligent people make decisions based on opportunity costs."
"What do you want to avoid? Such an easy answer: sloth and unreliability. If you're unreliable it doesn't matter what your virtues are. You're going to crater immediately. Doing what you have faithfully engaged to do should be an automatic part of your conduct. You want to avoid sloth and unreliability."
"Mimicking the herd invites regression to the mean."
"I did not succeed in life by intelligence. I succeeded because I have a long attention span."