A lot of people have ideas, but there are few who decide to do something about them now.

Learning ballroom dancing is great for your brain. But it only works for three to six months. After that, you've got all the benefit you can get, and so you have to move on to yoga, and then Tai Chi, and then bridge, always keeping on the steep part of the learning curve.

Innovation is hard. It really is. Because most people don't get it. Remember, the automobile, the airplane, the telephone, these were all considered toys at their introduction because they had no constituency. They were too new.

Radical innovation is difficult to fund. It seems scary. And the really radical things seem even more scary.

WeWork is a platform that is powered by technology. Our members are running their entire experience with WeWork through the app.

Because the Internet is so new, we still don't really understand what it is. We mistake it for a type of publishing or broadcasting, because that's what we're used to. So people complain that there's a lot of rubbish online, or that it's dominated by Americans, or that you can't necessarily trust what you read on the Web.

I am not convinced that lack of encryption is the primary problem. The problem with the Internet is that it is meant for communications among non-friends.

I believe mobile technology has a much broader role to play. It could solve some of the biggest problems on earth.