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.

The promise of the early web was that everyone could have a website but there was something missing. Maybe the technology wasn't ready.

For me, if I didn't have reading I'd go absolutely crazy. It really helps me to unplug from the whole world, and keep my sanity, and be able to fill my time with something other than technology.

In a flash order transaction, buy or sell orders are shown to a collection of high-frequency traders for just 30 milliseconds before they are routed to everyone else. They are widely considered to give the few investors with access to the technology an unfair advantage, even by some of the marketplaces that offer the flash orders for a fee.

I think the Internet, particularly the availability of information, is great. I do a lot of correspondence on-line and have a chat line to talk to my fans as well.