The nuclear approach I'm involved in is called a traveling-wave reactor, which uses waste uranium for fuel. There's a lot of things that have to go right for that dream to come true - many decades of building demo plants, proving the economics are right. But if it does, you could have cheaper energy with no CO2 emissions.

My fascination is broadly with biology and the fact that our increased understanding of biology allows for breakthroughs in a broad set of diseases.

Eventually you won't think of 'the Internet business.' You'll think of it more like news, weather, sports, but even that taxonomy isn't clear.

Giving money effectively is almost as hard as earning it in the first place.

Whenever there is hard work to be done, I assign it to the laziest man as he is sure to find an easy way of doing it. Be lazy, think crazy.

My mom was on the United Way group that decides how to allocate the money and looks at all the different charities and makes the very hard decisions about where that pool of funds is going to go.

We are always saying to ourself.. we have to innovate. We got to come up with that breakthrough... we're only paid for breakthroughs.