All decisions originate in the brain. So if we can better understand what's happening in the brain when we make investment decisions, maybe one day we'll be able to make more accurate financial forecasts - for a stock or even the entire market.

It is important to understand that the most important currency is social debt. Doing things for others. In order to get, you have to give.

After Hurricane Katrina, I wanted to go back to New Orleans to help musicians return to the city. But Andrew Young advised me, "If you want to help people, go work at an investment bank." His contrarian advice opened my eyes to the importance of capital. "Learn how to make some money before you give it away." I learned that you can bring about good in the world especially if you have a paycheck.

The challenge of our generation, whether it's young lawyers, young investment bankers, is to make capitalism work for people not just around the corner, but for people all around the world.

Money numbs your senses. People who touched paper money and then placed their hands in hot burning water didn't feel as much pain as those who hadn't touched money.

For the last several decades, there was a prevailing belief among traditional economists that the markets were rational and self-correcting. Alan Greenspan advocated this view. But the 2008 financial crisis showed that this view is incorrect, and Greenspan eventually admitted as much.

We are privileged that the dollar is the "currency of last resort" and the most important currency in the world. Global commodities are priced in dollars. Central banks in other countries hold great quantities of dollars. The dollar was the safe harbor, the port in the storm during the credit crisis.