The biggest mistake investors make is to believe that what happened in the recent past is likely to persist. They assume that something that was a good investment in the recent past is still a good investment. Typically, high past returns simply imply that an asset has become more expensive and is a poorer, not better, investment.

I have a bad rote memory, but I tend to learn through my experiences. And then when I went into the markets, and then starting my business as an entrepreneur, that affected my thinking a lot, too, because in order to be successful as both an investor and an entrepreneur, one has to be an independent thinker and bet against the consensus and be right. Because the consensus is built into the price, and if you're not an independent thinker in the markets you won't succeed. And if you're not an independent thinker as an entrepreneur starting out, you're not going to bring anything special.

One of the greatest sources of problems in our society arises from people having loads of wrong theories in their heads - often theories that are critical of others - that they won't test by speaking to the relevant people about them. Instead, they talk behind people's backs, which leads to pervasive misinformation.

I don't get caught up in the moment.

I could see that making judgments about people so that they are tried and sentenced in your head, without asking them for their perspective, is both unethical and unproductive. So I learned to love real integrity and to despise the lack of it.

By and large, life will give you what you deserve and it doesn't give a damn what you like. So it is up to you to take full responsibility to connect what you want with what you need to do to get it, and then to do those things.

There is an excellent correlation between giving society what it wants and making money, and almost no correlation between the desire to make money and how much money one makes.