'I don't know' has become 'I don't know yet'.

Like many others, I have deep misgivings about the state of education in the United States. Too many of our students fail to graduate from high school with the basic skills they will need to succeed in the 21st Century economy, much less prepared for the rigors of college and career. Although our top universities continue to rank among the best in the world, too few American students are pursuing degrees in science and technology. Compounding this problem is our failure to provide sufficient training for those already in the workforce.

The US spends more on energy R&D than all other countries put together, and I personally consider it quite inadequate.

What destroys more self-confidence than any other educational thing in America is being assigned to some remedial math when you get into some college, and then it's not taught very well and you end up with this sense of, 'Hey, I can't really figure those things out.'

The billion people who wake up every day trying to figure out if they have enough food to eat won't be at Davos.

I think if you talk to the experts in any field where you have to take on a unknown challenge, where you're going to be working on it for a long time you'd find that to work themselves up to their best performance and really throw themselves into it, you know, spend all these hours in there and ah, give it their... give it their best that optimism plays a role.

There's no such thing as going to a soapbox and saying, 'The government's corrupt,' and not having the intelligence service see your face. In the digital world, that can be done.