At a certain point in your career - I mean, part of the answer is a personal answer, which is that at a certain point in your career, it becomes more satisfying to help entrepreneurs than to be one.

Where I grew up, we had the three TV networks, maybe two radio stations, no cable TV. We still had a long-distance party line in our neighborhood, so you could listen to all your neighbors' phone calls. We had a very small public library, and the nearest bookstore was an hour away.

There is the opportunity to do more and better if you're smaller and more nimble.

Most of the big breakthrough technologies/companies seem crazy at first: PCs, the internet, Bitcoin, Airbnb, Uber, 140 characters.. It has to be a radical product. It has to be something where, when people look at it, at first they say, ‘I don’t get it, I don’t understand it. I think it’s too weird, I think it’s too unusual.’

Today's leading real-world retailer, Wal-Mart, uses software to power its logistics and distribution capabilities, which it has used to crush its competition

The days when a car aficionado could repair his or her own car are long past, due primarily to the high software content.

My goal is not to fail fast. My goal is to succeed over the long run. They are not the same thing.