It's a very difficult business, and I'm very interested in the future of it after I'm gone, and I thought that if I can't produce a strong management team here myself, and I can find better management elsewhere, then I should sell it.

This is a lifetime job. You don't look at it, you know, now and then. It doesn't really matter. When the market comes down, then I buy my land very cheaply, so I make my money on that.

My properties are very good income-producing buildings, so I will have a very good stream of profit even if I can't sell.

There's always room for an operator like Airbnb, but it's quite a different thing to my serviced apartments. Airbnb is a different market - it has nothing to do with me.

When you have a lot of construction going on, it sends a message of vitality that builds up consumer confidence. It gets people to spend money when they see that energy, that things are happening.

I made my money with software - encoded knowledge without which few products and services can exist today - and so it seemed imperative that this would be the field where I would give something back.

The only thing I like about rich people is their money.

During my 30 years on Wall Street, taxes on 'unearned income' have bounced up and down with regularity, and I've never detected any change in the appetite for hard work and accumulating wealth on the part of myself or any of my fellow capitalists.