The oldest and most important currency is debt.

Researchers have compared brain scans of those people who are making money to those high on cocaine and found that them to be almost identical. Money has a biological and psychological effect on us.

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.

Just the idea of making money can increase your skin conductancy, meaning there's a current of excitement.

The oldest and most important currency is debt.

I think the money for the solutions for global poverty is on Wall Street. Wall Street allocates capital. And we need to get capital to the ideas that are successful, whether it's microfinance, whether it's through financial literacy programs, Wall Street can be the engine that makes capital get to the people who need it.

Social standing and reptuation has always mattered, but now it 's happening on a global basis.