The oldest and most important currency is debt.

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.

Gone is the day where you work at a job for thirty years and retire. Millennials jump around and switch careers. I think it's important for CEOs to highlight career mobility within a company, so that employees don't get bored and continue to be stimulated.

It's a Wonderful Life. This film illustrates that if you treat your customers with respect, they will recognize you and even help when you're most in need.

Albert Murray's The Omni-Americans is the most valuable non-business book because it discusses how you have to draw upon everyone's creativity. America is a mash-up of cultures and traditions, and great businesses know how to tap the strengths of all their employees, whatever their background may be.

People have tried to control other people by trapping them with debt. A loan can become a harmful and dangerous weapon.

Money is really like blood. You need it to live but it isn't the point of life.