It's ok to say I don't know. Realizing this earlier in my career would have put me more at ease.

All organisms rely on exchange. They form symbiotic partnerships in order to obtain the energy that they need to survive. Energy is the currency of nature.

Persistence. Change doesn't happen overnight. You have to stay with it. Rosa Parks helped start the Civil Rights movement in earnest in 1955. Then it was nearly a decade until the Civil Rights Act was passed.

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.

I don't think money can be understood through a lens limited to economics. And most books about money tell you the history of money, the instrument. But money is also an idea, one that we exchange to survive.

Reputation will become an even more important currency in the future.

Money is becoming increasingly plastic and digital. If there is a major disaster, let's say an asteroid strike, we'll go back to trading meats and furs. We won't need an abstraction, a dollar bill, but real tangible goods to survive.