Our flame is taking the normal depleted uranium - the 99.3 percent that's cheap as heck, and there's a pile of it sitting in Paducah, Kentucky that's enough to power the United States for hundreds and hundreds of years. You're taking that and you are converting it to plutonium - and then you're burning that.

The inventory, the value of my company, walks out the door every evening.

I have not met [Donald] Trump and discussed any issues with him. There have been Republican administrations like the [George] Bush administration who initiated this AIDS generosity. So it's not purely a right-left thing.

I remember thinking quite logically that I didn't want to spoil my children with wealth and so that I would create a foundation, but not knowing exactly what it would focus on.

I've been studying how quickly we can get energy out to the poor countries - a lot of which are in Africa - and how little progress we've made there. There's no more electricity today in sub-Saharan Africa per person than there was 20 years ago.

I know there's a farmer out there somewhere who never wants a PC and that's fine with me.

The pace of progress in biology creates a foundation that naturally gets picked up by the biotech and pharmaceutical industry to solve rich-world diseases. This is attractive science. It's science that people want to work on.