If you think technology can solve your security problems then you don't understand the problems and you don't understand the technology.

I understood the importance in principle of public key cryptography but it's all moved much faster than I expected. I did not expect it to be a mainstay of advanced communications technology.

For the last 10 years I've felt increasing pressure to stop shooting film and start shooting video but I've never understood why. It's cheaper to work on film it's far better looking it's the technology that's been known and understood for a hundred years and it's extremely reliable.

You know I do music. If you look under the hood of the industry I'm in it's all based on technology. From radio to phonographs to CDs it's all technology. Microphones reel-to-reels cameras editing chips it's all technology.

I love what the Valley does. I love company building. I love startups. I love technology companies. I love new technology. I love this process of invention. Being able to participate in that as a founder and a product creator or as an investor or a board member I just find that hugely satisfying.

Don't underestimate questions from the crowd technology has made voters more informed than ever.

I am a teacher and I am proud of it. At Cornell University I have taught primarily undergraduates and indeed almost every year since 1966 have taught first-year general chemistry.

We're understanding what Obama is. He is the great teacher. He is this guy that stands above everybody. There's some condescension in it but he stands above everybody and says 'Now listen. You people have to stop blaming each other unreasonably. You have to get along here and I am going to show you the way.' It is a pretty brave role in many ways.

What we now call school training the pursuit of fixed studies at stated hours under the constant guidance of a teacher I could scarcely be said to have enjoyed.

We can not wait until we have enough trained people willing to work at a teacher's salary and under conditions imposed upon teachers in order to improve what happens in the classroom.