As far as I'm concerned, Twitter has wiped out Facebook. I'm done with Facebook.

If I were the president of the United States, I would make unions illegal. They no longer serve a functional purpose in democracy, in my view.

I have met many entrepreneurs who have the passion and even the work ethic to succeed - but who are so obsessed with an idea that they don't see its obvious flaws. Think about that. If you can't even acknowledge your failures, how can you cut the rope and move on?

The definition of leadership is that you have to find great people and ask them to do extraordinary things. I've been doing that my whole life.

The practical reality of managing cars in the family - I do 36-month leases. I think they're horrible investments. And you want to give them back after their warranty is over.

If a man could give birth it would be to a book - it's an 18-month gestation period.

When I turned 50, something clicked in my head and I said, 'I'm not going to live to 100. I'm half-cooked already.' I set the family down and I said, 'Listen everybody, we're now entering the decade of Daddy. We're going to start doing things that I want to do.