They [Mc Donalds] take people and give them a first job, which enables them to get a second job. They do a very good job of educating troubled young people to be good citizens and they're probably more successful than charter schools.

It's not given to human beings to have such talent that they can just know everything about everything all the time. But it is given to human beings who work hard at it - who look and sift the world for a mispriced bet - that they can occasionally find one. And the wise ones bet heavily when the world offers them that opportunity. They bet big when they have the odds. And the rest of the time they don't. It's just that simple.

Anyone with an engineering frame of mind will look at [accounting standards] and want to throw up.

In investment management today, everybody wants not only to win, but to have a yearly outcome path that never diverges very much from a standard path except on the upside. Well, that is a very artificial, crazy construct. That's the equivalent in investment management to the custom of binding the feet of Chinese women

So, economics should emulate physics' basic ethos, but its search for precision in physics-like formulas is almost always wrong in economics.

Obviously, consideration of costs is key, including opportunity costs. Of course capital isn't free. It's easy to figure out your cost of borrowing, but theorists went bonkers on the cost of equity capital. They say that if you're generating a 100% return on capital, then you shouldn't invest in something that generates an 80% return on capital. It's crazy.

I regard it as very unfair, but capitalism without failure is like religion without hell.