Perhaps concentrated wealth will inspire a nation of innovative problem-solvers. But if the view of many economists is right - that it sometimes discourages innovation - then we should worry.

The Internet is, among other things, a massive, chaotic marketplace. Too much information, it turns out, is a lot like no information.

Hating Wall Street is an American tradition that dates back even to the days when Thomas Jefferson cursed that money lover Alexander Hamilton. And for centuries, the complaints about it have largely stayed the same: 'It does nothing! It creates chaos! It's a parasite that sucks hardworking Americans dry!'

Unlike physics, economists don't settle things. There seems to be plenty of room for different conclusions that are still accepted in the academy.

The fun is getting to wear multiple disguises and getting to explore multiple personalities and bring them to life. So a movie career definitely affords me that.

Two decades of experience as an entrepreneur and CEO has informed my view that our priorities must stress improving educational outcomes, rebuilding America's infrastructure, lowering health care costs, addressing climate change, reforming immigration, and ushering in an advanced energy economy.

We're all in the service business. If you hire me to do a job I expect everybody else to be where I am. A little bit of crazy is good. It keeps things - balanced.

My best career decision was probably not giving up when I wanted to. God as well as my family and friends were there for me during my toughest times.